diff --git a/docs/en/reference/output_files.md b/docs/en/reference/output_files.md
index ceda5184..7e328ab6 100644
--- a/docs/en/reference/output_files.md
+++ b/docs/en/reference/output_files.md
@@ -29,12 +29,12 @@ The following sections provide detailed descriptions of each file's purpose and
 
 ![layout page example](../images/layout_example.png)
 
-### Text Spans File (spans.pdf)
+### Text Spans File (span.pdf)
 
 > [!NOTE]
 > Only applicable to pipeline backend
 
-**File naming format**: `{original_filename}_spans.pdf`
+**File naming format**: `{original_filename}_span.pdf`
 
 **Functionality**:
 
@@ -702,7 +702,7 @@ The above files constitute MinerU's complete output results. Users can choose ap
   
 - **Debugging and verification** (Use visualization files):
     * layout.pdf
-    * spans.pdf 
+    * span.pdf 
   
 - **Content extraction**: (Use simplified files):
     * *.md
diff --git a/docs/zh/reference/output_files.md b/docs/zh/reference/output_files.md
index 27293056..4efb3c10 100644
--- a/docs/zh/reference/output_files.md
+++ b/docs/zh/reference/output_files.md
@@ -29,12 +29,12 @@
 
 ![layout 页面示例](../images/layout_example.png)
 
-### 文本片段文件 (spans.pdf)
+### 文本片段文件 (span.pdf)
 
 > [!NOTE]
 > 仅适用于 pipeline 后端
 
-**文件命名格式**：`{原文件名}_spans.pdf`
+**文件命名格式**：`{原文件名}_span.pdf`
 
 **功能说明**：
 
@@ -817,7 +817,7 @@ vlm 后端的 content_list.json 文件结构与 pipeline 后端类似，伴随
   
 - **调试和验证**(使用可视化文件):
     * layout.pdf
-    * spans.pdf 
+    * span.pdf 
   
 - **内容提取**(使用简化文件):
     * *.md