diff --git a/source_code_build.md b/source_code_build.md
index 22e1b1b9647376b201622eebb4c61a69f65e0ab8..ccd1c9932ac9d32ca71cc8155b8910e3708f6842 100644
--- a/source_code_build.md
+++ b/source_code_build.md
@@ -77,7 +77,7 @@ bash build/prebuilts_download.sh
 ### 2.1 同步内核仓
 
 ```
-cd ~
+cd ~/ohos/kernel/linux
 git clone https://gitee.com/ohos_port/linux-sdm845-6.2.git
 ```
 
@@ -128,6 +128,11 @@ cd ~/ohos/vendor
 git clone https://gitee.com/ohos_port/vendor_oneplus.git -b OpenHarmony-3.2-Release
 mv vendor_oneplus oneplus
 ```
+### 2.5 同步设备alsa-plugins仓,音频驱动仓库
+```
+cd ~/ohos/third_party
+git clone https://gitee.com/ohos_port/alsa-plugins.git
+```
 
 ## 3. 编译与打包