diff --git a/zh-cn/device-dev/reference/hdi-apis/_audio_mmap_buffer_descripter.md b/zh-cn/device-dev/reference/hdi-apis/_audio_mmap_buffer_descripter.md
index ae1a56a61e43026fdf892b4c956a884c4d6cce2b..93470c6b005a438663e7efd1b8e6ec204701af20 100644
--- a/zh-cn/device-dev/reference/hdi-apis/_audio_mmap_buffer_descripter.md
+++ b/zh-cn/device-dev/reference/hdi-apis/_audio_mmap_buffer_descripter.md
@@ -17,8 +17,8 @@ Mmap缓冲区描述符。
 
   | 名称 | 描述 | 
 | -------- | -------- |
-| [memoryAddress](_audio.md#memoryaddress) | 指向mmap缓冲区的指针 | 
-| [memoryFd](_audio.md#memoryfd) | mmap缓冲区的文件描述符 | 
+| [memoryAddress](_audio.md#memoryaddress) | 指向Mmap缓冲区的指针 | 
+| [memoryFd](_audio.md#memoryfd) | Mmap缓冲区的文件描述符 | 
 | [totalBufferFrames](_audio.md#totalbufferframes) | 缓冲区总大小，单位：帧 | 
 | [transferFrameSize](_audio.md#transferframesize) | 传输大小，单位：帧 | 
-| [isShareable](_audio.md#isshareable) | mmap缓冲区是否可以在进程间共享 | 
+| [isShareable](_audio.md#isshareable) | Mmap缓冲区是否可以在进程间共享 |