diff --git a/docs/reference/pipelines/source/file.md b/docs/reference/pipelines/source/file.md
index 001607c..ed84462 100644
--- a/docs/reference/pipelines/source/file.md
+++ b/docs/reference/pipelines/source/file.md
@@ -106,12 +106,6 @@ state含义解释：
 | ----------- | ------ | ---------- | -------- | ------------------------------------------------------------ |
 | workerCount | int    | 非必填     | 1        | 读取文件内容的工作线程(goroutine)数。单节点超过100个文件的时候考虑提高 |
 
-## readChanSize
-
-| `字段`       | `类型` | `是否必填` | `默认值` | `含义`                 |
-| ------------ | ------ | ---------- | -------- | ---------------------- |
-| readChanSize | int    | 非必填     | 512       | 读取任务的channel size |
-
 ## readBufferSize
 
 | `字段`         | `类型` | `是否必填` | `默认值` | `含义`                              |