diff --git a/src/components/providers/forms/GeminiCommonConfigModal.tsx b/src/components/providers/forms/GeminiCommonConfigModal.tsx
new file mode 100644
index 0000000..76696b7
--- /dev/null
+++ b/src/components/providers/forms/GeminiCommonConfigModal.tsx
@@ -0,0 +1,122 @@
+import React from "react";
+import { Save, Wand2 } from "lucide-react";
+import { useTranslation } from "react-i18next";
+import { toast } from "sonner";
+import {
+  Dialog,
+  DialogContent,
+  DialogHeader,
+  DialogTitle,
+  DialogFooter,
+} from "@/components/ui/dialog";
+import { Button } from "@/components/ui/button";
+import { formatJSON } from "@/utils/formatters";
+
+interface GeminiCommonConfigModalProps {
+  isOpen: boolean;
+  onClose: () => void;
+  value: string;
+  onChange: (value: string) => void;
+  error?: string;
+}
+
+/**
+ * GeminiCommonConfigModal - Common Gemini configuration editor modal
+ * Allows editing of common JSON configuration shared across Gemini providers
+ */
+export const GeminiCommonConfigModal: React.FC<
+  GeminiCommonConfigModalProps
+> = ({ isOpen, onClose, value, onChange, error }) => {
+  const { t } = useTranslation();
+
+  const handleFormat = () => {
+    if (!value.trim()) return;
+
+    try {
+      const formatted = formatJSON(value);
+      onChange(formatted);
+      toast.success(t("common.formatSuccess", { defaultValue: "格式化成功" }));
+    } catch (error) {
+      const errorMessage =
+        error instanceof Error ? error.message : String(error);
+      toast.error(
+        t("common.formatError", {
+          defaultValue: "格式化失败：{{error}}",
+          error: errorMessage,
+        }),
+      );
+    }
+  };
+
+  return (
+    <Dialog open={isOpen} onOpenChange={(open) => !open && onClose()}>
+      <DialogContent
+        zIndex="nested"
+        className="max-w-2xl max-h-[90vh] flex flex-col p-0"
+      >
+        <DialogHeader className="px-6 pt-6 pb-0">
+          <DialogTitle>
+            {t("geminiConfig.editCommonConfigTitle", {
+              defaultValue: "编辑 Gemini 通用配置片段",
+            })}
+          </DialogTitle>
+        </DialogHeader>
+
+        <div className="flex-1 overflow-auto px-6 py-4 space-y-4">
+          <p className="text-sm text-gray-500 dark:text-gray-400">
+            {t("geminiConfig.commonConfigHint", {
+              defaultValue:
+                "通用配置片段将合并到所有启用它的 Gemini 供应商配置中",
+            })}
+          </p>
+
+          <textarea
+            value={value}
+            onChange={(e) => onChange(e.target.value)}
+            placeholder={`{
+  "timeout": 30000,
+  "maxRetries": 3,
+  "customField": "value"
+}`}
+            rows={12}
+            className="w-full px-3 py-2 border border-border-default dark:bg-gray-800 dark:text-gray-100 rounded-lg text-sm font-mono focus:outline-none focus:ring-2 focus:ring-blue-500/20 dark:focus:ring-blue-400/20 focus:border-border-active transition-colors resize-y"
+            autoComplete="off"
+            autoCorrect="off"
+            autoCapitalize="none"
+            spellCheck={false}
+            lang="en"
+            inputMode="text"
+            data-gramm="false"
+            data-gramm_editor="false"
+            data-enable-grammarly="false"
+          />
+
+          <div className="flex items-center justify-between">
+            <button
+              type="button"
+              onClick={handleFormat}
+              className="inline-flex items-center gap-1.5 px-3 py-1.5 text-xs font-medium text-gray-700 dark:text-gray-300 hover:text-blue-600 dark:hover:text-blue-400 transition-colors"
+            >
+              <Wand2 className="w-3.5 h-3.5" />
+              {t("common.format", { defaultValue: "格式化" })}
+            </button>
+
+            {error && (
+              <p className="text-sm text-red-500 dark:text-red-400">{error}</p>
+            )}
+          </div>
+        </div>
+
+        <DialogFooter>
+          <Button type="button" variant="outline" onClick={onClose}>
+            {t("common.cancel")}
+          </Button>
+          <Button type="button" onClick={onClose} className="gap-2">
+            <Save className="w-4 h-4" />
+            {t("common.save")}
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+};
diff --git a/src/components/providers/forms/GeminiConfigEditor.tsx b/src/components/providers/forms/GeminiConfigEditor.tsx
index b9623b9..7d5b1bd 100644
--- a/src/components/providers/forms/GeminiConfigEditor.tsx
+++ b/src/components/providers/forms/GeminiConfigEditor.tsx
@@ -1,139 +1,76 @@
-import { useTranslation } from "react-i18next";
-import { Label } from "@/components/ui/label";
-import { Wand2 } from "lucide-react";
-import { toast } from "sonner";
+import React, { useState, useEffect } from "react";
+import { GeminiEnvSection, GeminiConfigSection } from "./GeminiConfigSections";
+import { GeminiCommonConfigModal } from "./GeminiCommonConfigModal";
 
 interface GeminiConfigEditorProps {
-  value: string;
-  onChange: (value: string) => void;
+  envValue: string;
+  configValue: string;
+  onEnvChange: (value: string) => void;
+  onConfigChange: (value: string) => void;
+  onEnvBlur?: () => void;
+  useCommonConfig: boolean;
+  onCommonConfigToggle: (checked: boolean) => void;
+  commonConfigSnippet: string;
+  onCommonConfigSnippetChange: (value: string) => void;
+  commonConfigError: string;
+  envError: string;
+  configError: string;
 }
 
-export function GeminiConfigEditor({
-  value,
-  onChange,
-}: GeminiConfigEditorProps) {
-  const { t } = useTranslation();
+const GeminiConfigEditor: React.FC<GeminiConfigEditorProps> = ({
+  envValue,
+  configValue,
+  onEnvChange,
+  onConfigChange,
+  onEnvBlur,
+  useCommonConfig,
+  onCommonConfigToggle,
+  commonConfigSnippet,
+  onCommonConfigSnippetChange,
+  commonConfigError,
+  envError,
+  configError,
+}) => {
+  const [isCommonConfigModalOpen, setIsCommonConfigModalOpen] = useState(false);
 
-  // 将 JSON 格式转换为 .env 格式显示
-  const jsonToEnv = (jsonString: string): string => {
-    try {
-      const config = JSON.parse(jsonString);
-      const env = config?.env || {};
-
-      const lines: string[] = [];
-      if (env.GOOGLE_GEMINI_BASE_URL) {
-        lines.push(`GOOGLE_GEMINI_BASE_URL=${env.GOOGLE_GEMINI_BASE_URL}`);
-      }
-      if (env.GEMINI_API_KEY) {
-        lines.push(`GEMINI_API_KEY=${env.GEMINI_API_KEY}`);
-      }
-      if (env.GEMINI_MODEL) {
-        lines.push(`GEMINI_MODEL=${env.GEMINI_MODEL}`);
-      }
-
-      return lines.join("\n");
-    } catch {
-      return "";
+  // Auto-open common config modal if there's an error
+  useEffect(() => {
+    if (commonConfigError && !isCommonConfigModalOpen) {
+      setIsCommonConfigModalOpen(true);
     }
-  };
-
-  // 将 .env 格式转换为 JSON 格式保存
-  const envToJson = (envString: string): string => {
-    try {
-      const lines = envString.split("\n");
-      const env: Record<string, string> = {};
-
-      lines.forEach((line) => {
-        const trimmed = line.trim();
-        if (!trimmed || trimmed.startsWith("#")) return;
-
-        const equalIndex = trimmed.indexOf("=");
-        if (equalIndex > 0) {
-          const key = trimmed.substring(0, equalIndex).trim();
-          const value = trimmed.substring(equalIndex + 1).trim();
-          env[key] = value;
-        }
-      });
-
-      return JSON.stringify({ env }, null, 2);
-    } catch {
-      return value;
-    }
-  };
-
-  const displayValue = jsonToEnv(value);
-
-  const handleChange = (envString: string) => {
-    const jsonString = envToJson(envString);
-    onChange(jsonString);
-  };
-
-  const handleFormat = () => {
-    if (!value.trim()) return;
-
-    try {
-      // 重新格式化
-      const envString = jsonToEnv(value);
-      const formatted = envString
-        .split("\n")
-        .filter((l) => l.trim())
-        .join("\n");
-      const jsonString = envToJson(formatted);
-      onChange(jsonString);
-      toast.success(t("common.formatSuccess", { defaultValue: "格式化成功" }));
-    } catch (error) {
-      const errorMessage =
-        error instanceof Error ? error.message : String(error);
-      toast.error(
-        t("common.formatError", {
-          defaultValue: "格式化失败：{{error}}",
-          error: errorMessage,
-        }),
-      );
-    }
-  };
+  }, [commonConfigError, isCommonConfigModalOpen]);
 
   return (
-    <div className="space-y-2">
-      <div className="flex items-center justify-between">
-        <Label htmlFor="geminiConfig">
-          {t("provider.geminiConfig", { defaultValue: "Gemini 配置" })}
-        </Label>
-      </div>
-      <textarea
-        id="geminiConfig"
-        value={displayValue}
-        onChange={(e) => handleChange(e.target.value)}
-        placeholder={`GOOGLE_GEMINI_BASE_URL=https://your-api-endpoint.com/
-GEMINI_API_KEY=sk-your-api-key-here
-GEMINI_MODEL=gemini-2.5-pro`}
-        rows={8}
-        className="w-full px-3 py-2 border border-border-default dark:bg-gray-800 dark:text-gray-100 rounded-lg text-sm font-mono focus:outline-none focus:ring-2 focus:ring-blue-500/20 dark:focus:ring-blue-400/20 transition-colors resize-y min-h-[10rem]"
-        autoComplete="off"
-        autoCorrect="off"
-        autoCapitalize="none"
-        spellCheck={false}
-        lang="en"
-        inputMode="text"
-        data-gramm="false"
-        data-gramm_editor="false"
-        data-enable-grammarly="false"
+    <div className="space-y-6">
+      {/* Env Section */}
+      <GeminiEnvSection
+        value={envValue}
+        onChange={onEnvChange}
+        onBlur={onEnvBlur}
+        error={envError}
+      />
+
+      {/* Config JSON Section */}
+      <GeminiConfigSection
+        value={configValue}
+        onChange={onConfigChange}
+        useCommonConfig={useCommonConfig}
+        onCommonConfigToggle={onCommonConfigToggle}
+        onEditCommonConfig={() => setIsCommonConfigModalOpen(true)}
+        commonConfigError={commonConfigError}
+        configError={configError}
+      />
+
+      {/* Common Config Modal */}
+      <GeminiCommonConfigModal
+        isOpen={isCommonConfigModalOpen}
+        onClose={() => setIsCommonConfigModalOpen(false)}
+        value={commonConfigSnippet}
+        onChange={onCommonConfigSnippetChange}
+        error={commonConfigError}
       />
-      <div className="flex items-center justify-between">
-        <button
-          type="button"
-          onClick={handleFormat}
-          className="inline-flex items-center gap-1.5 px-3 py-1.5 text-xs font-medium text-gray-700 dark:text-gray-300 hover:text-blue-600 dark:hover:text-blue-400 transition-colors"
-        >
-          <Wand2 className="w-3.5 h-3.5" />
-          {t("common.format", { defaultValue: "格式化" })}
-        </button>
-        <p className="text-xs text-muted-foreground">
-          {t("provider.geminiConfigHint", {
-            defaultValue: "使用 .env 格式配置 Gemini",
-          })}
-        </p>
-      </div>
     </div>
   );
-}
+};
+
+export default GeminiConfigEditor;
diff --git a/src/components/providers/forms/GeminiConfigSections.tsx b/src/components/providers/forms/GeminiConfigSections.tsx
new file mode 100644
index 0000000..5674b98
--- /dev/null
+++ b/src/components/providers/forms/GeminiConfigSections.tsx
@@ -0,0 +1,237 @@
+import React from "react";
+import { useTranslation } from "react-i18next";
+import { Wand2 } from "lucide-react";
+import { toast } from "sonner";
+import { formatJSON } from "@/utils/formatters";
+
+interface GeminiEnvSectionProps {
+  value: string;
+  onChange: (value: string) => void;
+  onBlur?: () => void;
+  error?: string;
+}
+
+/**
+ * GeminiEnvSection - .env editor section for Gemini environment variables
+ */
+export const GeminiEnvSection: React.FC<GeminiEnvSectionProps> = ({
+  value,
+  onChange,
+  onBlur,
+  error,
+}) => {
+  const { t } = useTranslation();
+
+  const handleFormat = () => {
+    if (!value.trim()) return;
+
+    try {
+      // 重新格式化 .env 内容
+      const formatted = value
+        .split("\n")
+        .filter((line) => line.trim())
+        .join("\n");
+      onChange(formatted);
+      toast.success(t("common.formatSuccess", { defaultValue: "格式化成功" }));
+    } catch (error) {
+      const errorMessage =
+        error instanceof Error ? error.message : String(error);
+      toast.error(
+        t("common.formatError", {
+          defaultValue: "格式化失败：{{error}}",
+          error: errorMessage,
+        }),
+      );
+    }
+  };
+
+  return (
+    <div className="space-y-2">
+      <label
+        htmlFor="geminiEnv"
+        className="block text-sm font-medium text-gray-900 dark:text-gray-100"
+      >
+        {t("geminiConfig.envFile", { defaultValue: "环境变量 (.env)" })}
+      </label>
+
+      <textarea
+        id="geminiEnv"
+        value={value}
+        onChange={(e) => onChange(e.target.value)}
+        onBlur={onBlur}
+        placeholder={`GOOGLE_GEMINI_BASE_URL=https://your-api-endpoint.com/
+GEMINI_API_KEY=sk-your-api-key-here
+GEMINI_MODEL=gemini-2.5-pro`}
+        rows={6}
+        className="w-full px-3 py-2 border border-border-default dark:bg-gray-800 dark:text-gray-100 rounded-lg text-sm font-mono focus:outline-none focus:ring-2 focus:ring-blue-500/20 dark:focus:ring-blue-400/20 transition-colors resize-y min-h-[8rem]"
+        autoComplete="off"
+        autoCorrect="off"
+        autoCapitalize="none"
+        spellCheck={false}
+        lang="en"
+        inputMode="text"
+        data-gramm="false"
+        data-gramm_editor="false"
+        data-enable-grammarly="false"
+      />
+
+      <div className="flex items-center justify-between">
+        <button
+          type="button"
+          onClick={handleFormat}
+          className="inline-flex items-center gap-1.5 px-3 py-1.5 text-xs font-medium text-gray-700 dark:text-gray-300 hover:text-blue-600 dark:hover:text-blue-400 transition-colors"
+        >
+          <Wand2 className="w-3.5 h-3.5" />
+          {t("common.format", { defaultValue: "格式化" })}
+        </button>
+
+        {error && (
+          <p className="text-xs text-red-500 dark:text-red-400">{error}</p>
+        )}
+      </div>
+
+      {!error && (
+        <p className="text-xs text-gray-500 dark:text-gray-400">
+          {t("geminiConfig.envFileHint", {
+            defaultValue: "使用 .env 格式配置 Gemini 环境变量",
+          })}
+        </p>
+      )}
+    </div>
+  );
+};
+
+interface GeminiConfigSectionProps {
+  value: string;
+  onChange: (value: string) => void;
+  useCommonConfig: boolean;
+  onCommonConfigToggle: (checked: boolean) => void;
+  onEditCommonConfig: () => void;
+  commonConfigError?: string;
+  configError?: string;
+}
+
+/**
+ * GeminiConfigSection - Config JSON editor section with common config support
+ */
+export const GeminiConfigSection: React.FC<GeminiConfigSectionProps> = ({
+  value,
+  onChange,
+  useCommonConfig,
+  onCommonConfigToggle,
+  onEditCommonConfig,
+  commonConfigError,
+  configError,
+}) => {
+  const { t } = useTranslation();
+
+  const handleFormat = () => {
+    if (!value.trim()) return;
+
+    try {
+      const formatted = formatJSON(value);
+      onChange(formatted);
+      toast.success(t("common.formatSuccess", { defaultValue: "格式化成功" }));
+    } catch (error) {
+      const errorMessage =
+        error instanceof Error ? error.message : String(error);
+      toast.error(
+        t("common.formatError", {
+          defaultValue: "格式化失败：{{error}}",
+          error: errorMessage,
+        }),
+      );
+    }
+  };
+
+  return (
+    <div className="space-y-2">
+      <div className="flex items-center justify-between">
+        <label
+          htmlFor="geminiConfig"
+          className="block text-sm font-medium text-gray-900 dark:text-gray-100"
+        >
+          {t("geminiConfig.configJson", {
+            defaultValue: "配置文件 (config.json)",
+          })}
+        </label>
+
+        <label className="inline-flex items-center gap-2 text-sm text-gray-500 dark:text-gray-400 cursor-pointer">
+          <input
+            type="checkbox"
+            checked={useCommonConfig}
+            onChange={(e) => onCommonConfigToggle(e.target.checked)}
+            className="w-4 h-4 text-blue-500 bg-white dark:bg-gray-800 border-border-default rounded focus:ring-blue-500 dark:focus:ring-blue-400 focus:ring-2"
+          />
+          {t("geminiConfig.writeCommonConfig", {
+            defaultValue: "写入通用配置",
+          })}
+        </label>
+      </div>
+
+      <div className="flex items-center justify-end">
+        <button
+          type="button"
+          onClick={onEditCommonConfig}
+          className="text-xs text-blue-500 dark:text-blue-400 hover:underline"
+        >
+          {t("geminiConfig.editCommonConfig", {
+            defaultValue: "编辑通用配置",
+          })}
+        </button>
+      </div>
+
+      {commonConfigError && (
+        <p className="text-xs text-red-500 dark:text-red-400 text-right">
+          {commonConfigError}
+        </p>
+      )}
+
+      <textarea
+        id="geminiConfig"
+        value={value}
+        onChange={(e) => onChange(e.target.value)}
+        placeholder={`{
+  "timeout": 30000,
+  "maxRetries": 3
+}`}
+        rows={8}
+        className="w-full px-3 py-2 border border-border-default dark:bg-gray-800 dark:text-gray-100 rounded-lg text-sm font-mono focus:outline-none focus:ring-2 focus:ring-blue-500/20 dark:focus:ring-blue-400/20 transition-colors resize-y min-h-[10rem]"
+        autoComplete="off"
+        autoCorrect="off"
+        autoCapitalize="none"
+        spellCheck={false}
+        lang="en"
+        inputMode="text"
+        data-gramm="false"
+        data-gramm_editor="false"
+        data-enable-grammarly="false"
+      />
+
+      <div className="flex items-center justify-between">
+        <button
+          type="button"
+          onClick={handleFormat}
+          className="inline-flex items-center gap-1.5 px-3 py-1.5 text-xs font-medium text-gray-700 dark:text-gray-300 hover:text-blue-600 dark:hover:text-blue-400 transition-colors"
+        >
+          <Wand2 className="w-3.5 h-3.5" />
+          {t("common.format", { defaultValue: "格式化" })}
+        </button>
+
+        {configError && (
+          <p className="text-xs text-red-500 dark:text-red-400">
+            {configError}
+          </p>
+        )}
+      </div>
+
+      {!configError && (
+        <p className="text-xs text-gray-500 dark:text-gray-400">
+          {t("geminiConfig.configJsonHint", {
+            defaultValue: "使用 JSON 格式配置 Gemini 扩展参数（可选）",
+          })}
+        </p>
+      )}
+    </div>
+  );
+};
diff --git a/src/components/providers/forms/hooks/index.ts b/src/components/providers/forms/hooks/index.ts
index dec019b..88e5864 100644
--- a/src/components/providers/forms/hooks/index.ts
+++ b/src/components/providers/forms/hooks/index.ts
@@ -10,3 +10,5 @@ export { useCommonConfigSnippet } from "./useCommonConfigSnippet";
 export { useCodexCommonConfig } from "./useCodexCommonConfig";
 export { useSpeedTestEndpoints } from "./useSpeedTestEndpoints";
 export { useCodexTomlValidation } from "./useCodexTomlValidation";
+export { useGeminiConfigState } from "./useGeminiConfigState";
+export { useGeminiCommonConfig } from "./useGeminiCommonConfig";
diff --git a/src/components/providers/forms/hooks/useCommonConfigSnippet.ts b/src/components/providers/forms/hooks/useCommonConfigSnippet.ts
index fe9e06c..d2414e7 100644
--- a/src/components/providers/forms/hooks/useCommonConfigSnippet.ts
+++ b/src/components/providers/forms/hooks/useCommonConfigSnippet.ts
@@ -29,8 +29,9 @@ export function useCommonConfigSnippet({
   initialData,
 }: UseCommonConfigSnippetProps) {
   const [useCommonConfig, setUseCommonConfig] = useState(false);
-  const [commonConfigSnippet, setCommonConfigSnippetState] =
-    useState<string>(DEFAULT_COMMON_CONFIG_SNIPPET);
+  const [commonConfigSnippet, setCommonConfigSnippetState] = useState<string>(
+    DEFAULT_COMMON_CONFIG_SNIPPET,
+  );
   const [commonConfigError, setCommonConfigError] = useState("");
   const [isLoading, setIsLoading] = useState(true);
 
@@ -64,7 +65,9 @@ export function useCommonConfigSnippet({
                 }
                 // 清理 localStorage
                 window.localStorage.removeItem(LEGACY_STORAGE_KEY);
-                console.log("[迁移] 通用配置已从 localStorage 迁移到 config.json");
+                console.log(
+                  "[迁移] 通用配置已从 localStorage 迁移到 config.json",
+                );
               }
             } catch (e) {
               console.warn("[迁移] 从 localStorage 迁移失败:", e);
diff --git a/src/components/providers/forms/hooks/useGeminiCommonConfig.ts b/src/components/providers/forms/hooks/useGeminiCommonConfig.ts
new file mode 100644
index 0000000..9a10f4e
--- /dev/null
+++ b/src/components/providers/forms/hooks/useGeminiCommonConfig.ts
@@ -0,0 +1,299 @@
+import { useState, useEffect, useCallback, useRef } from "react";
+
+const GEMINI_COMMON_CONFIG_STORAGE_KEY =
+  "cc-switch:gemini-common-config-snippet";
+const DEFAULT_GEMINI_COMMON_CONFIG_SNIPPET = `{
+  "timeout": 30000,
+  "maxRetries": 3
+}`;
+
+interface UseGeminiCommonConfigProps {
+  configValue: string;
+  onConfigChange: (config: string) => void;
+  initialData?: {
+    settingsConfig?: Record<string, unknown>;
+  };
+}
+
+/**
+ * 深度合并两个对象（用于合并通用配置）
+ */
+function deepMerge(target: any, source: any): any {
+  if (typeof target !== "object" || target === null) {
+    return source;
+  }
+  if (typeof source !== "object" || source === null) {
+    return target;
+  }
+  if (Array.isArray(source)) {
+    return source;
+  }
+
+  const result = { ...target };
+  for (const key of Object.keys(source)) {
+    if (typeof source[key] === "object" && !Array.isArray(source[key])) {
+      result[key] = deepMerge(result[key], source[key]);
+    } else {
+      result[key] = source[key];
+    }
+  }
+  return result;
+}
+
+/**
+ * 从配置中移除通用配置片段（递归比较）
+ */
+function removeCommonConfig(config: any, commonConfig: any): any {
+  if (typeof config !== "object" || config === null) {
+    return config;
+  }
+  if (typeof commonConfig !== "object" || commonConfig === null) {
+    return config;
+  }
+
+  const result = { ...config };
+  for (const key of Object.keys(commonConfig)) {
+    if (result[key] === undefined) continue;
+
+    // 如果值完全相等，删除该键
+    if (JSON.stringify(result[key]) === JSON.stringify(commonConfig[key])) {
+      delete result[key];
+    } else if (
+      typeof result[key] === "object" &&
+      !Array.isArray(result[key]) &&
+      typeof commonConfig[key] === "object" &&
+      !Array.isArray(commonConfig[key])
+    ) {
+      // 递归移除嵌套对象
+      result[key] = removeCommonConfig(result[key], commonConfig[key]);
+      // 如果移除后对象为空，删除该键
+      if (Object.keys(result[key]).length === 0) {
+        delete result[key];
+      }
+    }
+  }
+  return result;
+}
+
+/**
+ * 检查配置中是否包含通用配置片段
+ */
+function hasCommonConfigSnippet(config: any, commonConfig: any): boolean {
+  if (typeof config !== "object" || config === null) return false;
+  if (typeof commonConfig !== "object" || commonConfig === null) return false;
+
+  for (const key of Object.keys(commonConfig)) {
+    if (config[key] === undefined) return false;
+    if (JSON.stringify(config[key]) !== JSON.stringify(commonConfig[key])) {
+      // 检查嵌套对象
+      if (
+        typeof config[key] === "object" &&
+        !Array.isArray(config[key]) &&
+        typeof commonConfig[key] === "object" &&
+        !Array.isArray(commonConfig[key])
+      ) {
+        if (!hasCommonConfigSnippet(config[key], commonConfig[key])) {
+          return false;
+        }
+      } else {
+        return false;
+      }
+    }
+  }
+  return true;
+}
+
+/**
+ * 管理 Gemini 通用配置片段 (JSON 格式)
+ */
+export function useGeminiCommonConfig({
+  configValue,
+  onConfigChange,
+  initialData,
+}: UseGeminiCommonConfigProps) {
+  const [useCommonConfig, setUseCommonConfig] = useState(false);
+  const [commonConfigSnippet, setCommonConfigSnippetState] = useState<string>(
+    () => {
+      if (typeof window === "undefined") {
+        return DEFAULT_GEMINI_COMMON_CONFIG_SNIPPET;
+      }
+      try {
+        const stored = window.localStorage.getItem(
+          GEMINI_COMMON_CONFIG_STORAGE_KEY,
+        );
+        if (stored && stored.trim()) {
+          return stored;
+        }
+      } catch {
+        // ignore localStorage 读取失败
+      }
+      return DEFAULT_GEMINI_COMMON_CONFIG_SNIPPET;
+    },
+  );
+  const [commonConfigError, setCommonConfigError] = useState("");
+
+  // 用于跟踪是否正在通过通用配置更新
+  const isUpdatingFromCommonConfig = useRef(false);
+
+  // 初始化时检查通用配置片段（编辑模式）
+  useEffect(() => {
+    if (initialData?.settingsConfig) {
+      try {
+        const config =
+          typeof initialData.settingsConfig.config === "object"
+            ? initialData.settingsConfig.config
+            : {};
+        const commonConfigObj = JSON.parse(commonConfigSnippet);
+        const hasCommon = hasCommonConfigSnippet(config, commonConfigObj);
+        setUseCommonConfig(hasCommon);
+      } catch {
+        // ignore parse error
+      }
+    }
+  }, [initialData, commonConfigSnippet]);
+
+  // 同步本地存储的通用配置片段
+  useEffect(() => {
+    if (typeof window === "undefined") return;
+    try {
+      if (commonConfigSnippet.trim()) {
+        window.localStorage.setItem(
+          GEMINI_COMMON_CONFIG_STORAGE_KEY,
+          commonConfigSnippet,
+        );
+      } else {
+        window.localStorage.removeItem(GEMINI_COMMON_CONFIG_STORAGE_KEY);
+      }
+    } catch {
+      // ignore
+    }
+  }, [commonConfigSnippet]);
+
+  // 处理通用配置开关
+  const handleCommonConfigToggle = useCallback(
+    (checked: boolean) => {
+      try {
+        const configObj = configValue.trim() ? JSON.parse(configValue) : {};
+        const commonConfigObj = JSON.parse(commonConfigSnippet);
+
+        let updatedConfig: any;
+        if (checked) {
+          // 合并通用配置
+          updatedConfig = deepMerge(configObj, commonConfigObj);
+        } else {
+          // 移除通用配置
+          updatedConfig = removeCommonConfig(configObj, commonConfigObj);
+        }
+
+        setCommonConfigError("");
+        setUseCommonConfig(checked);
+
+        // 标记正在通过通用配置更新
+        isUpdatingFromCommonConfig.current = true;
+        onConfigChange(JSON.stringify(updatedConfig, null, 2));
+
+        // 在下一个事件循环中重置标记
+        setTimeout(() => {
+          isUpdatingFromCommonConfig.current = false;
+        }, 0);
+      } catch (error) {
+        const errorMessage =
+          error instanceof Error ? error.message : String(error);
+        setCommonConfigError(`配置合并失败: ${errorMessage}`);
+        setUseCommonConfig(false);
+      }
+    },
+    [configValue, commonConfigSnippet, onConfigChange],
+  );
+
+  // 处理通用配置片段变化
+  const handleCommonConfigSnippetChange = useCallback(
+    (value: string) => {
+      const previousSnippet = commonConfigSnippet;
+      setCommonConfigSnippetState(value);
+
+      if (!value.trim()) {
+        setCommonConfigError("");
+        if (useCommonConfig) {
+          // 移除旧的通用配置
+          try {
+            const configObj = configValue.trim() ? JSON.parse(configValue) : {};
+            const previousCommonConfigObj = JSON.parse(previousSnippet);
+            const updatedConfig = removeCommonConfig(
+              configObj,
+              previousCommonConfigObj,
+            );
+            onConfigChange(JSON.stringify(updatedConfig, null, 2));
+            setUseCommonConfig(false);
+          } catch {
+            // ignore
+          }
+        }
+        return;
+      }
+
+      // 校验 JSON 格式
+      try {
+        JSON.parse(value);
+        setCommonConfigError("");
+      } catch {
+        setCommonConfigError("通用配置片段格式错误（必须是有效的 JSON）");
+        return;
+      }
+
+      // 若当前启用通用配置，需要替换为最新片段
+      if (useCommonConfig) {
+        try {
+          const configObj = configValue.trim() ? JSON.parse(configValue) : {};
+          const previousCommonConfigObj = JSON.parse(previousSnippet);
+          const newCommonConfigObj = JSON.parse(value);
+
+          // 先移除旧的通用配置
+          const withoutOld = removeCommonConfig(
+            configObj,
+            previousCommonConfigObj,
+          );
+          // 再合并新的通用配置
+          const withNew = deepMerge(withoutOld, newCommonConfigObj);
+
+          // 标记正在通过通用配置更新，避免触发状态检查
+          isUpdatingFromCommonConfig.current = true;
+          onConfigChange(JSON.stringify(withNew, null, 2));
+
+          // 在下一个事件循环中重置标记
+          setTimeout(() => {
+            isUpdatingFromCommonConfig.current = false;
+          }, 0);
+        } catch (error) {
+          const errorMessage =
+            error instanceof Error ? error.message : String(error);
+          setCommonConfigError(`配置替换失败: ${errorMessage}`);
+        }
+      }
+    },
+    [commonConfigSnippet, configValue, useCommonConfig, onConfigChange],
+  );
+
+  // 当配置变化时检查是否包含通用配置（但避免在通过通用配置更新时检查）
+  useEffect(() => {
+    if (isUpdatingFromCommonConfig.current) {
+      return;
+    }
+    try {
+      const configObj = configValue.trim() ? JSON.parse(configValue) : {};
+      const commonConfigObj = JSON.parse(commonConfigSnippet);
+      const hasCommon = hasCommonConfigSnippet(configObj, commonConfigObj);
+      setUseCommonConfig(hasCommon);
+    } catch {
+      // ignore parse error
+    }
+  }, [configValue, commonConfigSnippet]);
+
+  return {
+    useCommonConfig,
+    commonConfigSnippet,
+    commonConfigError,
+    handleCommonConfigToggle,
+    handleCommonConfigSnippetChange,
+  };
+}
diff --git a/src/components/providers/forms/hooks/useGeminiConfigState.ts b/src/components/providers/forms/hooks/useGeminiConfigState.ts
new file mode 100644
index 0000000..4ab96e6
--- /dev/null
+++ b/src/components/providers/forms/hooks/useGeminiConfigState.ts
@@ -0,0 +1,217 @@
+import { useState, useCallback, useEffect } from "react";
+
+interface UseGeminiConfigStateProps {
+  initialData?: {
+    settingsConfig?: Record<string, unknown>;
+  };
+}
+
+/**
+ * 管理 Gemini 配置状态
+ * Gemini 配置包含两部分：env (环境变量) 和 config (扩展配置 JSON)
+ */
+export function useGeminiConfigState({
+  initialData,
+}: UseGeminiConfigStateProps) {
+  const [geminiEnv, setGeminiEnvState] = useState("");
+  const [geminiConfig, setGeminiConfigState] = useState("");
+  const [geminiApiKey, setGeminiApiKey] = useState("");
+  const [geminiBaseUrl, setGeminiBaseUrl] = useState("");
+  const [envError, setEnvError] = useState("");
+  const [configError, setConfigError] = useState("");
+
+  // 将 JSON env 对象转换为 .env 格式字符串
+  const envObjToString = useCallback(
+    (envObj: Record<string, unknown>): string => {
+      const lines: string[] = [];
+      if (typeof envObj.GOOGLE_GEMINI_BASE_URL === "string") {
+        lines.push(`GOOGLE_GEMINI_BASE_URL=${envObj.GOOGLE_GEMINI_BASE_URL}`);
+      }
+      if (typeof envObj.GEMINI_API_KEY === "string") {
+        lines.push(`GEMINI_API_KEY=${envObj.GEMINI_API_KEY}`);
+      }
+      if (typeof envObj.GEMINI_MODEL === "string") {
+        lines.push(`GEMINI_MODEL=${envObj.GEMINI_MODEL}`);
+      }
+      return lines.join("\n");
+    },
+    [],
+  );
+
+  // 将 .env 格式字符串转换为 JSON env 对象
+  const envStringToObj = useCallback(
+    (envString: string): Record<string, string> => {
+      const env: Record<string, string> = {};
+      const lines = envString.split("\n");
+      lines.forEach((line) => {
+        const trimmed = line.trim();
+        if (!trimmed || trimmed.startsWith("#")) return;
+        const equalIndex = trimmed.indexOf("=");
+        if (equalIndex > 0) {
+          const key = trimmed.substring(0, equalIndex).trim();
+          const value = trimmed.substring(equalIndex + 1).trim();
+          env[key] = value;
+        }
+      });
+      return env;
+    },
+    [],
+  );
+
+  // 初始化 Gemini 配置（编辑模式）
+  useEffect(() => {
+    if (!initialData) return;
+
+    const config = initialData.settingsConfig;
+    if (typeof config === "object" && config !== null) {
+      // 设置 env
+      const env = (config as any).env || {};
+      setGeminiEnvState(envObjToString(env));
+
+      // 设置 config
+      const configObj = (config as any).config || {};
+      setGeminiConfigState(JSON.stringify(configObj, null, 2));
+
+      // 提取 API Key 和 Base URL
+      if (typeof env.GEMINI_API_KEY === "string") {
+        setGeminiApiKey(env.GEMINI_API_KEY);
+      }
+      if (typeof env.GOOGLE_GEMINI_BASE_URL === "string") {
+        setGeminiBaseUrl(env.GOOGLE_GEMINI_BASE_URL);
+      }
+    }
+  }, [initialData, envObjToString]);
+
+  // 从 geminiEnv 中提取并同步 API Key 和 Base URL
+  useEffect(() => {
+    const envObj = envStringToObj(geminiEnv);
+    const extractedKey = envObj.GEMINI_API_KEY || "";
+    const extractedBaseUrl = envObj.GOOGLE_GEMINI_BASE_URL || "";
+
+    if (extractedKey !== geminiApiKey) {
+      setGeminiApiKey(extractedKey);
+    }
+    if (extractedBaseUrl !== geminiBaseUrl) {
+      setGeminiBaseUrl(extractedBaseUrl);
+    }
+  }, [geminiEnv, envStringToObj]);
+
+  // 验证 Gemini Config JSON
+  const validateGeminiConfig = useCallback((value: string): string => {
+    if (!value.trim()) return ""; // 空值允许
+    try {
+      const parsed = JSON.parse(value);
+      if (parsed && typeof parsed === "object" && !Array.isArray(parsed)) {
+        return "";
+      }
+      return "Config must be a JSON object";
+    } catch {
+      return "Invalid JSON format";
+    }
+  }, []);
+
+  // 设置 env
+  const setGeminiEnv = useCallback((value: string) => {
+    setGeminiEnvState(value);
+    // .env 格式较宽松，不做严格校验
+    setEnvError("");
+  }, []);
+
+  // 设置 config (支持函数更新)
+  const setGeminiConfig = useCallback(
+    (value: string | ((prev: string) => string)) => {
+      const newValue =
+        typeof value === "function" ? value(geminiConfig) : value;
+      setGeminiConfigState(newValue);
+      setConfigError(validateGeminiConfig(newValue));
+    },
+    [geminiConfig, validateGeminiConfig],
+  );
+
+  // 处理 Gemini API Key 输入并写回 env
+  const handleGeminiApiKeyChange = useCallback(
+    (key: string) => {
+      const trimmed = key.trim();
+      setGeminiApiKey(trimmed);
+
+      const envObj = envStringToObj(geminiEnv);
+      envObj.GEMINI_API_KEY = trimmed;
+      const newEnv = envObjToString(envObj);
+      setGeminiEnv(newEnv);
+    },
+    [geminiEnv, envStringToObj, envObjToString, setGeminiEnv],
+  );
+
+  // 处理 Gemini Base URL 变化
+  const handleGeminiBaseUrlChange = useCallback(
+    (url: string) => {
+      const sanitized = url.trim().replace(/\/+$/, "");
+      setGeminiBaseUrl(sanitized);
+
+      const envObj = envStringToObj(geminiEnv);
+      envObj.GOOGLE_GEMINI_BASE_URL = sanitized;
+      const newEnv = envObjToString(envObj);
+      setGeminiEnv(newEnv);
+    },
+    [geminiEnv, envStringToObj, envObjToString, setGeminiEnv],
+  );
+
+  // 处理 env 变化
+  const handleGeminiEnvChange = useCallback(
+    (value: string) => {
+      setGeminiEnv(value);
+    },
+    [setGeminiEnv],
+  );
+
+  // 处理 config 变化
+  const handleGeminiConfigChange = useCallback(
+    (value: string) => {
+      setGeminiConfig(value);
+    },
+    [setGeminiConfig],
+  );
+
+  // 重置配置（用于预设切换）
+  const resetGeminiConfig = useCallback(
+    (env: Record<string, unknown>, config: Record<string, unknown>) => {
+      const envString = envObjToString(env);
+      const configString = JSON.stringify(config, null, 2);
+
+      setGeminiEnv(envString);
+      setGeminiConfig(configString);
+
+      // 提取 API Key 和 Base URL
+      if (typeof env.GEMINI_API_KEY === "string") {
+        setGeminiApiKey(env.GEMINI_API_KEY);
+      } else {
+        setGeminiApiKey("");
+      }
+
+      if (typeof env.GOOGLE_GEMINI_BASE_URL === "string") {
+        setGeminiBaseUrl(env.GOOGLE_GEMINI_BASE_URL);
+      } else {
+        setGeminiBaseUrl("");
+      }
+    },
+    [envObjToString, setGeminiEnv, setGeminiConfig],
+  );
+
+  return {
+    geminiEnv,
+    geminiConfig,
+    geminiApiKey,
+    geminiBaseUrl,
+    envError,
+    configError,
+    setGeminiEnv,
+    setGeminiConfig,
+    handleGeminiApiKeyChange,
+    handleGeminiBaseUrlChange,
+    handleGeminiEnvChange,
+    handleGeminiConfigChange,
+    resetGeminiConfig,
+    envStringToObj,
+    envObjToString,
+  };
+}