diff --git a/src/background.js b/src/background.js
index db945fb..0d4ee60 100644
--- a/src/background.js
+++ b/src/background.js
@@ -23,6 +23,7 @@ import {
   CMD_OPEN_TRANBOX,
   CLIENT_THUNDERBIRD,
   MSG_SET_LOGLEVEL,
+  MSG_CLEAR_CACHES,
 } from "./config";
 import { getSettingWithDefault, tryInitDefaultData } from "./libs/storage";
 import { trySyncSettingAndRules } from "./libs/sync";
@@ -275,6 +276,7 @@ const messageHandlers = {
   [MSG_BUILTINAI_DETECT]: (args) => chromeDetect(args),
   [MSG_BUILTINAI_TRANSLATE]: (args) => chromeTranslate(args),
   [MSG_SET_LOGLEVEL]: (args) => logger.setLevel(args),
+  [MSG_CLEAR_CACHES]: () => tryClearCaches(),
 };
 
 /**
diff --git a/src/config/msg.js b/src/config/msg.js
index 942ae2e..f74f542 100644
--- a/src/config/msg.js
+++ b/src/config/msg.js
@@ -3,7 +3,7 @@ export const CMD_TOGGLE_STYLE = "toggleStyle";
 export const CMD_OPEN_OPTIONS = "openOptions";
 export const CMD_OPEN_TRANBOX = "openTranbox";
 
-export const MSG_FETCH = "fetch";
+export const MSG_FETCH = "kiss_fetch";
 export const MSG_GET_HTTPCACHE = "get_httpcache";
 export const MSG_PUT_HTTPCACHE = "put_httpcache";
 export const MSG_OPEN_OPTIONS = "open_options";
@@ -25,6 +25,7 @@ export const MSG_UPDATE_CSP = "update_csp";
 export const MSG_BUILTINAI_DETECT = "builtinai_detect";
 export const MSG_BUILTINAI_TRANSLATE = "builtinai_translte";
 export const MSG_SET_LOGLEVEL = "set_loglevel";
+export const MSG_CLEAR_CACHES = "clear_caches";
 
 export const MSG_XHR_DATA_YOUTUBE = "KISS_XHR_DATA_YOUTUBE";
 // export const MSG_GLOBAL_VAR_FETCH = "KISS_GLOBAL_VAR_FETCH";
diff --git a/src/libs/cache.js b/src/libs/cache.js
index 538980d..9a9239a 100644
--- a/src/libs/cache.js
+++ b/src/libs/cache.js
@@ -1,6 +1,7 @@
 import {
   CACHE_NAME,
   DEFAULT_CACHE_TIMEOUT,
+  MSG_CLEAR_CACHES,
   MSG_GET_HTTPCACHE,
   MSG_PUT_HTTPCACHE,
 } from "../config";
@@ -15,7 +16,11 @@ import { blobToBase64 } from "./utils";
  */
 export const tryClearCaches = async () => {
   try {
-    caches.delete(CACHE_NAME);
+    if (isExt && !isBg) {
+      await sendBgMsg(MSG_CLEAR_CACHES);
+    } else {
+      await caches.delete(CACHE_NAME);
+    }
   } catch (err) {
     kissLog("clean caches", err);
   }
diff --git a/src/views/Popup/index.js b/src/views/Popup/index.js
index 3c8153e..2c560a7 100644
--- a/src/views/Popup/index.js
+++ b/src/views/Popup/index.js
@@ -471,11 +471,9 @@ export default function Popup({ setShowPopup, translator }) {
           <Button variant="text" onClick={handleSaveRule}>
             {i18n("save_rule")}
           </Button>
-          {!isExt && (
-            <Button variant="text" onClick={handleClearCache}>
-              {i18n("clear_cache")}
-            </Button>
-          )}
+          <Button variant="text" onClick={handleClearCache}>
+            {i18n("clear_cache")}
+          </Button>
           <Button variant="text" onClick={handleOpenSetting}>
             {i18n("setting")}
           </Button>