diff --git a/applications/BearPi/BearPi-HM_Nano/docs/figures/D13_iot_cloud_oc_gps/image.png b/applications/BearPi/BearPi-HM_Nano/docs/figures/D13_iot_cloud_oc_gps/image.png
new file mode 100644
index 0000000000000000000000000000000000000000..dc07a2b35047ac98b35454a4742bc7642224b97d
Binary files /dev/null and b/applications/BearPi/BearPi-HM_Nano/docs/figures/D13_iot_cloud_oc_gps/image.png differ
diff --git a/applications/BearPi/BearPi-HM_Nano/sample/D13_iot_cloud_oc_gps/README.md b/applications/BearPi/BearPi-HM_Nano/sample/D13_iot_cloud_oc_gps/README.md
index 1697a3b363db69cc5042b858dea3fcd4cb3371b3..f27210a288b709a0cac0530e8a29d4c20ab73489 100755
--- a/applications/BearPi/BearPi-HM_Nano/sample/D13_iot_cloud_oc_gps/README.md
+++ b/applications/BearPi/BearPi-HM_Nano/sample/D13_iot_cloud_oc_gps/README.md
@@ -282,6 +282,11 @@ static void deal_report_msg(report_t *report)
 #"D12_iot_cloud_oc_agriculture:cloud_oc_agriculture",
 "D13_iot_cloud_oc_gps:cloud_oc_gps",
 ```
+### 连接GPS扩展板的使能脚
+
+用一根杜邦线将IO04脚与GND连接，IO04脚是GPS芯片的工作使能脚
+
+![Alt text](/applications/BearPi/BearPi-HM_Nano/docs/figures/D13_iot_cloud_oc_gps/image.png)
 ### 编译调试
 示例代码编译烧录代码后，按下开发板的RESET按键，通过串口助手查看日志，平台上的设备显示为在线状态。
 
diff --git a/applications/BearPi/BearPi-HM_Nano/sample/D13_iot_cloud_oc_gps/src/E53_ST1.c b/applications/BearPi/BearPi-HM_Nano/sample/D13_iot_cloud_oc_gps/src/E53_ST1.c
index 916a9b1a78eafe5f978bb192f505567ae70d209a..fb160d1daba1f49d7a42e0db8be18aeb34c3fbf2 100755
--- a/applications/BearPi/BearPi-HM_Nano/sample/D13_iot_cloud_oc_gps/src/E53_ST1.c
+++ b/applications/BearPi/BearPi-HM_Nano/sample/D13_iot_cloud_oc_gps/src/E53_ST1.c
@@ -72,14 +72,18 @@ void GPS_Init(void)
 void Init_E53_ST1(void)
 {
     GpioInit();                                                           //初始化GPIO
-    IoSetFunc(WIFI_IOT_IO_NAME_GPIO_8, WIFI_IOT_IO_FUNC_GPIO_8_PWM1_OUT); //设置GPIO_3引脚复用功能为PWM
-    GpioSetDir(WIFI_IOT_IO_NAME_GPIO_8, WIFI_IOT_GPIO_DIR_OUT);           //设置GPIO_3引脚为输出模式
-    PwmInit(WIFI_IOT_PWM_PORT_PWM1);                                      //初始化PWM5端口
+    IoSetFunc(WIFI_IOT_IO_NAME_GPIO_8, WIFI_IOT_IO_FUNC_GPIO_8_PWM1_OUT); //设置GPIO_8引脚复用功能为PWM
+    GpioSetDir(WIFI_IOT_IO_NAME_GPIO_8, WIFI_IOT_GPIO_DIR_OUT);           //设置GPIO_8引脚为输出模式
+    PwmInit(WIFI_IOT_PWM_PORT_PWM1);                                      //初始化PWM1端口
 
-    IoSetFunc(WIFI_IOT_IO_NAME_GPIO_4, WIFI_IOT_IO_FUNC_GPIO_8_GPIO);     //设置GPIO_4引脚复用功能为GPIO
-    GpioSetDir(WIFI_IOT_IO_NAME_GPIO_4, WIFI_IOT_GPIO_DIR_OUT);           //设置GPIO_3引脚为输出模式
+    IoSetFunc(WIFI_IOT_IO_NAME_GPIO_4, WIFI_IOT_IO_FUNC_GPIO_4_GPIO);     //设置GPIO_4引脚复用功能为GPIO
+    GpioSetDir(WIFI_IOT_IO_NAME_GPIO_4, WIFI_IOT_GPIO_DIR_OUT);           //设置GPIO_4引脚为输出模式
     GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_4, 0);
 
+    IoSetFunc(WIFI_IOT_IO_NAME_GPIO_2, WIFI_IOT_IO_FUNC_GPIO_2_GPIO);     //设置GPIO_2引脚复用功能为GPIO
+    GpioSetDir(WIFI_IOT_IO_NAME_GPIO_2, WIFI_IOT_GPIO_DIR_OUT);           //设置GPIO_2引脚为输出模式
+    GpioSetOutputVal(WIFI_IOT_IO_NAME_GPIO_2, 0);
+
 	GPS_Init();
 }