diff --git a/zh-cn/device-dev/subsystems/subsys-toolchain.md b/zh-cn/device-dev/subsystems/subsys-toolchain.md
index 95ca46093b747b95083d2d67c39e73010936d990..14dd90c8b7c95a026de6bb40d5a1fd9eb30baeec 100644
--- a/zh-cn/device-dev/subsystems/subsys-toolchain.md
+++ b/zh-cn/device-dev/subsystems/subsys-toolchain.md
@@ -4,6 +4,6 @@
 
 - **[bytrace使用指导](subsys-toolchain-bytrace-guide.md)**
 
-- **[hdc_std 使用指导](subsys-toolchain-hdc-guide.md)**
+- **[hdc_std使用指导](subsys-toolchain-hdc-guide.md)**
 
-- **[hiperf 使用指导](subsys-toolchain-hiperf.md)**
\ No newline at end of file
+- **[hiperf使用指导](subsys-toolchain-hiperf.md)**
\ No newline at end of file