diff --git a/zh/sidebar.yaml b/zh/sidebar.yaml
index ccd782e46f05dfe57ac25ea52cdfe2e659996d57..0e03d77e9ecf5fbe6fe1539a94f3fc88a52407d9 100644
--- a/zh/sidebar.yaml
+++ b/zh/sidebar.yaml
@@ -162,6 +162,8 @@ items:
             file: medialib/audio.Audio.md
         -   label: Record - 录音
             file: medialib/audio.Record.md
+        -   label: PCM - 音频数据编码
+            file: medialib/audio.PCM.md
     -   label: qrcode - 二维码显示
         file: medialib/qrcode.md 
 -   label: Wi-Fi通信