diff --git a/docs/Application_guide/en/sidebar.yaml b/docs/Application_guide/en/sidebar.yaml
index 588d5bfcfa63d80c8ef97af57e4631f98a68210c..7b9e0c5e917fc1f4f6249d8cbc05c16f50872290 100644
--- a/docs/Application_guide/en/sidebar.yaml
+++ b/docs/Application_guide/en/sidebar.yaml
@@ -10,8 +10,6 @@ items:
         file: background/about-qpy.md
     -   label: Hardware Platform Support
         file: background/hardware-platform.md
-    -   label: Project Development Process
-        file: background/project-dev.md
 -   label: System Function
     file: system/README.md
     items:
diff --git a/docs/Application_guide/zh/sidebar.yaml b/docs/Application_guide/zh/sidebar.yaml
index 0f137aa6556511738fe84417b1b14974aee7b566..4f04a40d51a05882cacf36bac48d424a226a41fd 100644
--- a/docs/Application_guide/zh/sidebar.yaml
+++ b/docs/Application_guide/zh/sidebar.yaml
@@ -10,8 +10,6 @@ items:
         file: background/about-qpy.md
     -   label: 硬件平台支持
         file: background/hardware-platform.md
-    -   label: 项目开发流程
-        file: background/project-dev.md
 -   label: 系统功能
     file: system/README.md
     items: