diff --git a/docs/zh_CN/arduino/arduino_home_page.md b/docs/zh_CN/arduino/arduino_home_page.md
index 6a07a1a1..c16eb724 100644
--- a/docs/zh_CN/arduino/arduino_home_page.md
+++ b/docs/zh_CN/arduino/arduino_home_page.md
@@ -63,7 +63,8 @@ const m5stickc_api = {
     'AXP192':'#/zh_CN/api/axp192_m5stickc',
     'TFT-SCREEN':'#/zh_CN/api/lcd_m5stickc',
     'IMU':'#/zh_CN/api/imu',
-    'RTC':'#/zh_CN/api/rtc'
+    'RTC':'#/zh_CN/api/rtc',
+    'PWM':'#/zh_CN/api/pwm',
   }
 };