diff --git a/docs/doc.md b/docs/doc.md
index f1a8943..1daa0b8 100644
--- a/docs/doc.md
+++ b/docs/doc.md
@@ -53,6 +53,7 @@
 #### [FreeBitmap](#FreeBitmap)
 #### [ReadBitmap](#ReadBitmap)
 #### [CopyBitpb](#CopyBitpb)
+#### [DeepCopyBit](#DeepCopyBit)
 
 ## [Event](#Event)
 
@@ -476,6 +477,24 @@ robotgo.ReadBitmap(bitmap)
 robotgo.CopyBitpb(bitmap)
 ```    
 
+### <h3 id="DeepCopyBit">.DeepCopyBit(MMBitmapRef)</h3>
+
+   DeepCopyBit deep copy bitmap
+
+#### Arguments:
+
+    MMBitmapRef
+
+#### Return:
+
+    MMBitmapRef
+
+#### Examples:
+
+```Go
+robotgo.DeepCopyBit(bitmap)
+```  
+
 ## <h2 id="Event">Event</h2> 
 
 ### <h3 id="AddEvent">.AddEvent(string)</h3>
diff --git a/docs/doc_zh.md b/docs/doc_zh.md
index 21bdf23..9c97c55 100644
--- a/docs/doc_zh.md
+++ b/docs/doc_zh.md
@@ -55,6 +55,7 @@
 #### [FreeBitmap](#FreeBitmap)
 #### [ReadBitmap](#ReadBitmap)
 #### [CopyBitpb](#CopyBitpb)
+#### [DeepCopyBit](#DeepCopyBit)
 
 ## [事件](#Event)
 
@@ -490,6 +491,24 @@ robotgo.ReadBitmap(bitmap)
 robotgo.CopyBitpb(bitmap)
 ```    
 
+### <h3 id="DeepCopyBit">.DeepCopyBit(MMBitmapRef)</h3>
+
+   DeepCopyBit deep copy bitmap
+
+#### 参数:
+
+    MMBitmapRef
+
+#### 返回值:
+
+    MMBitmapRef
+
+#### 示例:
+
+```Go
+robotgo.DeepCopyBit(bitmap)
+```  
+
 ## <h2 id="Event">事件</h2> 
 
 ### <h3 id="AddEvent">.AddEvent(string)</h3>