diff --git a/docSite/content/zh-cn/docs/development/upgrading/4811.md b/docSite/content/zh-cn/docs/development/upgrading/4811.md
index 661cf7f62..24ffbe90c 100644
--- a/docSite/content/zh-cn/docs/development/upgrading/4811.md
+++ b/docSite/content/zh-cn/docs/development/upgrading/4811.md
@@ -80,7 +80,7 @@ weight: 813
 
 ### 3. 修改镜像 tag 并重启
 
-- 更新 FastGPT 镜像 tag: v4.8.11
+- 更新 FastGPT 镜像 tag: v4.8.11-fix
 - 更新 FastGPT 商业版镜像 tag: v4.8.11
 - 更新 FastGPT Sandbox 镜像 tag: v4.8.11
 
diff --git a/docSite/content/zh-cn/docs/development/upgrading/4812.md b/docSite/content/zh-cn/docs/development/upgrading/4812.md
index 4c8d08ce4..2d3d7523a 100644
--- a/docSite/content/zh-cn/docs/development/upgrading/4812.md
+++ b/docSite/content/zh-cn/docs/development/upgrading/4812.md
@@ -9,4 +9,5 @@ weight: 812
 
 ## 更新说明
 
-1. 新增 - 全局变量支持更多数据类型
\ No newline at end of file
+1. 新增 - 全局变量支持更多数据类型
+2. 修复 - 文件后缀判断，去除 query 影响。
\ No newline at end of file
diff --git a/packages/global/common/string/tools.ts b/packages/global/common/string/tools.ts
index add484b47..eabf8d685 100644
--- a/packages/global/common/string/tools.ts
+++ b/packages/global/common/string/tools.ts
@@ -102,3 +102,21 @@ export const sliceStrStartEnd = (str: string, start: number, end: number) => {
 
   return `${startContent}${overSize ? `\n\n...[hide ${str.length - start - end} chars]...\n\n` : ''}${endContent}`;
 };
+
+/* 
+  Parse file extension from url
+  Test：
+  1. https://xxx.com/file.pdf?token=123
+    => pdf
+  2. https://xxx.com/file.pdf
+    => pdf
+*/
+export const parseFileExtensionFromUrl = (url = '') => {
+  // Remove query params
+  const urlWithoutQuery = url.split('?')[0];
+  // Get file name
+  const fileName = urlWithoutQuery.split('/').pop() || '';
+  // Get file extension
+  const extension = fileName.split('.').pop();
+  return (extension || '').toLowerCase();
+};
diff --git a/packages/service/common/file/gridfs/controller.ts b/packages/service/common/file/gridfs/controller.ts
index 1345a37b3..97d95804c 100644
--- a/packages/service/common/file/gridfs/controller.ts
+++ b/packages/service/common/file/gridfs/controller.ts
@@ -11,6 +11,7 @@ import { readRawContentByFileBuffer } from '../read/utils';
 import { gridFsStream2Buffer, stream2Encoding } from './utils';
 import { addLog } from '../../system/log';
 import { readFromSecondary } from '../../mongo/utils';
+import { parseFileExtensionFromUrl } from '@fastgpt/global/common/string/tools';
 
 export function getGFSCollection(bucket: `${BucketNameEnum}`) {
   MongoDatasetFileSchema;
@@ -163,7 +164,7 @@ export const readFileContentFromMongo = async ({
     return Promise.reject(CommonErrEnum.fileNotFound);
   }
 
-  const extension = file?.filename?.split('.')?.pop()?.toLowerCase() || '';
+  const extension = parseFileExtensionFromUrl(file?.filename);
 
   const start = Date.now();
   const fileBuffers = await gridFsStream2Buffer(fileStream);
diff --git a/packages/service/core/dataset/read.ts b/packages/service/core/dataset/read.ts
index 2ab98a165..b76d0d3c2 100644
--- a/packages/service/core/dataset/read.ts
+++ b/packages/service/core/dataset/read.ts
@@ -6,6 +6,7 @@ import { parseCsvTable2Chunks } from './training/utils';
 import { TextSplitProps, splitText2Chunks } from '@fastgpt/global/common/string/textSplitter';
 import axios from 'axios';
 import { readRawContentByFileBuffer } from '../../common/file/read/utils';
+import { parseFileExtensionFromUrl } from '@fastgpt/global/common/string/tools';
 
 export const readFileRawTextByUrl = async ({
   teamId,
@@ -21,7 +22,7 @@ export const readFileRawTextByUrl = async ({
     url: url,
     responseType: 'arraybuffer'
   });
-  const extension = url.split('.')?.pop()?.toLowerCase() || '';
+  const extension = parseFileExtensionFromUrl(url);
 
   const buffer = Buffer.from(response.data, 'binary');
 
diff --git a/packages/service/core/workflow/dispatch/tools/readFiles.ts b/packages/service/core/workflow/dispatch/tools/readFiles.ts
index cdf46f623..31f8db7e9 100644
--- a/packages/service/core/workflow/dispatch/tools/readFiles.ts
+++ b/packages/service/core/workflow/dispatch/tools/readFiles.ts
@@ -12,6 +12,7 @@ import { detectFileEncoding } from '@fastgpt/global/common/file/tools';
 import { readRawContentByFileBuffer } from '../../../../common/file/read/utils';
 import { ChatRoleEnum } from '@fastgpt/global/core/chat/constants';
 import { UserChatItemValueItemType } from '@fastgpt/global/core/chat/type';
+import { parseFileExtensionFromUrl } from '@fastgpt/global/common/string/tools';
 
 type Props = ModuleDispatchProps<{
   [NodeInputKeyEnum.fileUrlList]: string[];
@@ -144,7 +145,8 @@ export const dispatchReadFiles = async (props: Props): Promise<Response> => {
             return url;
           })();
           // Extension
-          const extension = filename.split('.').pop()?.toLowerCase() || '';
+          const extension = parseFileExtensionFromUrl(filename);
+
           // Get encoding
           const encoding = (() => {
             const contentType = response.headers['content-type'];