diff --git a/docs/features/document-processing/chat-attachments-technical-design.md b/docs/features/document-processing/chat-attachments-technical-design.md
index 7e8a8dec..5f5e931f 100644
--- a/docs/features/document-processing/chat-attachments-technical-design.md
+++ b/docs/features/document-processing/chat-attachments-technical-design.md
@@ -14,7 +14,7 @@ Main。IPC 先验证可信 sender，再使用共享 `contextImportFilesSchema` 
 没有本地路径的截图沿用 `context.addPastedImage`；无路径的非图片文件和混有无路径项目
 的本地文件批次显示可处理的错误，不静默丢弃项目。
 
-`ContextManager.selectFiles` 只负责文件对话框，再调用与粘贴共用的 `importFiles`。
+`ContextManager.selectFiles` 打开不按文件类型过滤的多选文件对话框，再调用与粘贴共用的 `importFiles`。
 这个方法完成路径规范化、格式及大小检查、文本读取、图片转换、文档解析与上下文暂存。
 任一文件失败时删除本批次已经暂存的项目，保留之前的附件。文件系统错误不向 Renderer
 暴露绝对路径。
diff --git a/src/main/context-manager.test.ts b/src/main/context-manager.test.ts
index 27f6bd99..f4d7614b 100644
--- a/src/main/context-manager.test.ts
+++ b/src/main/context-manager.test.ts
@@ -514,11 +514,7 @@ describe('ContextManager', () => {
     })
     expect(showOpenDialog).toHaveBeenCalledWith(
       expect.anything(),
-      expect.objectContaining({
-        filters: expect.arrayContaining([
-          expect.objectContaining({ name: '图片' })
-        ])
-      })
+      { properties: ['openFile', 'multiSelections'] }
     )
   })
 
@@ -555,19 +551,7 @@ describe('ContextManager', () => {
     })
     expect(showOpenDialog).toHaveBeenCalledWith(
       expect.anything(),
-      expect.objectContaining({
-        filters: expect.arrayContaining([
-          expect.objectContaining({
-            name: 'PDF 和 Office 文档',
-            extensions: expect.arrayContaining([
-              'docx',
-              'pdf',
-              'pptx',
-              'xlsx'
-            ])
-          })
-        ])
-      })
+      { properties: ['openFile', 'multiSelections'] }
     )
     expect(onProgress.mock.calls.map(([progress]) => { const { operationId, ...rest } = progress; expect(operationId).toEqual(expect.any(String)); return rest })).toEqual([
       {
diff --git a/src/main/context-manager.ts b/src/main/context-manager.ts
index 28d96d4c..61dc581c 100644
--- a/src/main/context-manager.ts
+++ b/src/main/context-manager.ts
@@ -329,27 +329,7 @@ export class ContextManager {
     conversationId?: string
   ): Promise<ContextAttachment[]> {
     const result = await dialog.showOpenDialog(window, {
-      properties: ['openFile', 'multiSelections'],
-      filters: [
-        {
-          name: '文本、代码和配置文件',
-          extensions: [...supportedExtensions].map((extension) =>
-            extension.slice(1)
-          )
-        },
-        {
-          name: '图片',
-          extensions: [...supportedImageExtensions].map((extension) =>
-            extension.slice(1)
-          )
-        },
-        {
-          name: 'PDF 和 Office 文档',
-          extensions: [...supportedDocumentExtensions].map((extension) =>
-            extension.slice(1)
-          )
-        }
-      ]
+      properties: ['openFile', 'multiSelections']
     })
     if (result.canceled) {
       return []