diff --git a/STM32MP157AAA3/README.md b/STM32MP157AAA3/README.md
index fdec3e8..a45b5f9 100644
--- a/STM32MP157AAA3/README.md
+++ b/STM32MP157AAA3/README.md
@@ -1,19 +1,19 @@
 # MP157AAA3开发板引脚对应
 
 ## 独立按键
-key3 -> PE9
-key4 -> PG2
-key5 -> PG1
-key6 -> PG0
+ key3 -> PE9
+ key4 -> PG2
+ key5 -> PG1
+ key6 -> PG0
 
 ## LED灯
-LED4 -> PC7
-LED5 -> PF1
-LED6 -> PI11
-LED7 -> PI10
+ LED4 -> PC7
+ LED5 -> PF1
+ LED6 -> PI11
+ LED7 -> PI10
 
 ### 震动马达
-M1 -> PF6
+ M1 -> PF6
 
 ### 蜂鸣器
-buzzer -> PB6
\ No newline at end of file
+ buzzer -> PB6
\ No newline at end of file