diff --git a/web/global.d.ts b/web/global.d.ts
index f5e596c752..b81cdddc77 100644
--- a/web/global.d.ts
+++ b/web/global.d.ts
@@ -1,5 +1,3 @@
 declare module 'lamejs';
 declare module 'react-18-input-autosize';
-declare module 'fetch-readablestream' {
-  export default function fetchReadableStream(url: string, options?: RequestInit): Promise<Response>
-}
+
diff --git a/web/package.json b/web/package.json
index 432d631368..f6c33231d9 100644
--- a/web/package.json
+++ b/web/package.json
@@ -36,7 +36,6 @@
     "echarts": "^5.4.1",
     "echarts-for-react": "^3.0.2",
     "emoji-mart": "^5.5.2",
-    "fetch-readablestream": "^0.2.0",
     "i18next": "^22.4.13",
     "i18next-resources-to-backend": "^1.1.3",
     "immer": "^9.0.19",
diff --git a/web/service/base.ts b/web/service/base.ts
index 26fbf8c42a..0c07602cb9 100644
--- a/web/service/base.ts
+++ b/web/service/base.ts
@@ -1,11 +1,8 @@
-import fetchStream from 'fetch-readablestream'
 import { API_PREFIX, IS_CE_EDITION, PUBLIC_API_PREFIX } from '@/config'
 import Toast from '@/app/components/base/toast'
 import type { MessageEnd, MessageReplace, ThoughtItem } from '@/app/components/app/chat/type'
-import { isSupportNativeFetchStream } from '@/utils/stream'
 
 const TIME_OUT = 100000
-const supportNativeFetchStream = isSupportNativeFetchStream()
 
 const ContentType = {
   json: 'application/json',
@@ -223,9 +220,6 @@ const baseFetch = <T>(
   if (body && bodyStringify)
     options.body = JSON.stringify(body)
 
-  // for those do not support native fetch stream, we use fetch-readablestream as polyfill
-  const doFetch = supportNativeFetchStream ? globalThis.fetch : fetchStream
-
   // Handle timeout
   return Promise.race([
     new Promise((resolve, reject) => {
@@ -234,7 +228,7 @@ const baseFetch = <T>(
       }, TIME_OUT)
     }),
     new Promise((resolve, reject) => {
-      doFetch(urlWithPrefix, options as RequestInit)
+      globalThis.fetch(urlWithPrefix, options as RequestInit)
         .then((res) => {
           const resClone = res.clone()
           // Error handler
diff --git a/web/utils/stream.ts b/web/utils/stream.ts
deleted file mode 100644
index c6bd2a3062..0000000000
--- a/web/utils/stream.ts
+++ /dev/null
@@ -1,21 +0,0 @@
-// https://developer.chrome.com/articles/fetch-streaming-requests/#feature-detection
-export const isSupportNativeFetchStream = () => {
-  const supportsRequestStreams = (() => {
-    let duplexAccessed = false
-
-    const params = {
-      body: new ReadableStream(),
-      method: 'POST',
-      get duplex() {
-        duplexAccessed = true
-        return 'half'
-      },
-    }
-
-    const hasContentType = new Request('', params).headers.has('Content-Type')
-
-    return duplexAccessed && !hasContentType
-  })()
-
-  return supportsRequestStreams
-}