diff --git a/Power_Pico/BSP/KEY/key.c b/Power_Pico/BSP/KEY/key.c
index 69bb6ce..f73dc44 100644
--- a/Power_Pico/BSP/KEY/key.c
+++ b/Power_Pico/BSP/KEY/key.c
@@ -1,4 +1,5 @@
 #include "key.h"
+#include "cmsis_os.h"
 
 void Key_Port_Init(void)
 {
@@ -8,29 +9,54 @@ void Key_Port_Init(void)
   __HAL_RCC_GPIOA_CLK_ENABLE();
 
   /*Configure GPIO pin : PA0 */
-  GPIO_InitStruct.Pin = KEY1_PIN;
+  GPIO_InitStruct.Pin = KEYB_PIN | KEYY_PIN | KEYL_PIN | KEYR_PIN | KEYN_PIN;
   GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
   GPIO_InitStruct.Pull = GPIO_PULLUP;
-  HAL_GPIO_Init(KEY1_PORT, &GPIO_InitStruct);
+  HAL_GPIO_Init(KEYB_PORT, &GPIO_InitStruct);
 }
 
+// mode: 0 - sigle press, 1 - long press
 uint8_t KeyScan(uint8_t mode)
 {
 	static uint8_t key_up = 1;
-	uint8_t keyvalue=0;
-	if(mode) key_up = 1;
-	if( key_up && (!KEY1))
+	static uint8_t key_down = 0;
+	uint8_t keyvalue = 0;
+
+	if(mode)
 	{
-		HAL_Delay(3);//ensure the key is down
-		if(!KEY1) keyvalue = 1;
-		if(keyvalue) key_up = 0;
+		key_up = 1;
+		key_down = 0;
 	}
-	else
+
+	if( key_up && (!KEYB || !KEYY || !KEYL || !KEYR || !KEYN) )
 	{
-		HAL_Delay(3);//ensure the key is up
-		if(KEY1)
+		osDelay(3); // ensure the key pressed
+		if(!KEYB)
+			key_down = KEYB_NUM;
+		else if(!KEYY)
+			key_down = KEYY_NUM;
+		else if(!KEYL)
+			key_down = KEYL_NUM;
+		else if(!KEYR)
+			key_down = KEYR_NUM;
+		else if(!KEYN)
+			key_down = KEYN_NUM;
+		if(key_down)
+			key_up = 0;
+	}
+
+	// 松开才有效
+	if ( key_down && KEYB && KEYY && KEYL && KEYR && KEYN )
+	{
+		osDelay(3);//ensure the key
+		if(KEYB && KEYY && KEYL && KEYR && KEYN)
+		{
 			key_up = 1;
+			keyvalue = key_down;
+			key_down = 0;
+		}
 	}
+
 	return keyvalue;
 }
 
diff --git a/Power_Pico/BSP/KEY/key.h b/Power_Pico/BSP/KEY/key.h
index 5e7a2d5..54a6ce2 100644
--- a/Power_Pico/BSP/KEY/key.h
+++ b/Power_Pico/BSP/KEY/key.h
@@ -7,21 +7,42 @@ extern "C" {
 
 #include "main.h"
 
-//KEY1
-#define KEY1_PORT	GPIOA
-#define KEY1_PIN	GPIO_PIN_0
-#define KEY1 HAL_GPIO_ReadPin(KEY1_PORT,KEY1_PIN)
+// boot, yes, right, left, no
+#define KEYB_NUM 1
+#define KEYY_NUM 2
+#define KEYL_NUM 3
+#define KEYR_NUM 4
+#define KEYN_NUM 5
 
-//KEY2
-#define KEY2 0
+//KEYB
+#define KEYB_PORT	GPIOA
+#define KEYB_PIN	GPIO_PIN_0
+#define KEYB HAL_GPIO_ReadPin(KEYB_PORT,KEYB_PIN)
+
+//KEYY
+#define KEYY_PORT	GPIOA
+#define KEYY_PIN	GPIO_PIN_1
+#define KEYY HAL_GPIO_ReadPin(KEYY_PORT,KEYY_PIN)
+
+//KEYL
+#define KEYL_PORT	GPIOA
+#define KEYL_PIN	GPIO_PIN_2
+#define KEYL HAL_GPIO_ReadPin(KEYL_PORT,KEYL_PIN)
+
+//KEYR
+#define KEYR_PORT	GPIOA
+#define KEYR_PIN	GPIO_PIN_3
+#define KEYR HAL_GPIO_ReadPin(KEYR_PORT,KEYR_PIN)
+
+//KEYN
+#define KEYN_PORT	GPIOA
+#define KEYN_PIN	GPIO_PIN_4
+#define KEYN HAL_GPIO_ReadPin(KEYN_PORT,KEYN_PIN)
 
 void Key_Port_Init(void);
-void Key_Interrupt_Callback(void);
 uint8_t KeyScan(uint8_t mode);
 
 
-
-
 #ifdef __cplusplus
 }
 #endif