diff --git a/rt-thread-version/rt-thread-standard/programming-manual/device/pin/pin.md b/rt-thread-version/rt-thread-standard/programming-manual/device/pin/pin.md
index 52a65d22e446be66ca81a499ea7b3b5b30c49d1e..1578bb56f279f7412399d78cd6212ff77c967ea1 100644
--- a/rt-thread-version/rt-thread-standard/programming-manual/device/pin/pin.md
+++ b/rt-thread-version/rt-thread-standard/programming-manual/device/pin/pin.md
@@ -317,10 +317,10 @@ PIN 设备的具体使用方式可以参考如下示例代码，示例代码的
     #define BEEP_PIN_NUM            35  /* PB0 */
 #endif
 #ifndef KEY0_PIN_NUM
-    #define KEY0_PIN_NUM            55  /* PD8 */
+    #define KEY0_PIN_NUM            56  /* PD8 */
 #endif
 #ifndef KEY1_PIN_NUM
-    #define KEY1_PIN_NUM            56  /* PD9 */
+    #define KEY1_PIN_NUM            57  /* PD9 */
 #endif
 
 void beep_on(void *args)