diff --git a/Source/EC800M_4G.c b/Source/EC800M_4G.c
index 72c358e..7d37a4b 100644
--- a/Source/EC800M_4G.c
+++ b/Source/EC800M_4G.c
@@ -85,7 +85,7 @@ int _4G_uart_read_string_until_response(char *DATA, int *DATA_LEN, const char *e
     }
 }
 
-int EC800M_4G_INIT()
+int EC800M_4G_INIT(char *IP, int PORT)
 {
     // AT+CFUN=1,1
     //uart_send_string("AT+CFUN=1,1\r\n");
@@ -151,9 +151,11 @@ int EC800M_4G_INIT()
     printf("%s %d\n", _4G_DATA, _4G_DATA_LEN);
 
     // AT+QIOPEN=1,0,"TCP","47.240.75.93",8009,0,1
-    uart_send_string("AT+QIOPEN=1,0,\"TCP\",\"123.60.29.178\",8009,0,1\r\n");
+    char QIOPEN[270] = { 0 };
+    sprintf(QIOPEN, _QIOPEN, IP, PORT);
+    uart_send_string(QIOPEN);
     if (-1 == _4G_uart_read_string_until_response(_4G_DATA, &_4G_DATA_LEN, "0,0")) {
-        printf("EC800M Module 4G \"AT+QIOPEN=1,0,\"TCP\",\"123.60.29.178\",8009,0,1\r\n\" Timeout!\n");
+        printf("EC800M Module 4G AT+QIOPEN Timeout!\n");
         return -1;
     }
     printf("%s %d\n", _4G_DATA, _4G_DATA_LEN);
@@ -297,12 +299,12 @@ int establish_tcp_connection()
         return 0;
     }
 
-    int _r = EC800M_4G_INIT();  // 第一次建立TCP
+    int _r = EC800M_4G_INIT(SERVER_HOST, SERVER_POER);  // 第一次建立TCP
     int retry_count = 0;        // 重试计数器
 
     while (_r == -1 && retry_count < TCP_MAX_RETRY) {
         printf("TCP establishment failed! Retrying...\n");
-        _r = EC800M_4G_INIT();  // 重新建立TCP连接
+        _r = EC800M_4G_INIT(SERVER_HOST, SERVER_POER);  // 重新建立TCP连接
         retry_count++;
         sleep_ms(9000);         // 等待一段时间后重试
     }
@@ -370,7 +372,7 @@ void EC800M_4G(void *p)
         EC800M_4G_RECV("aixiao.me\r\n");
         
         
-        
+        // GPS Module
         EC800M_GPS(NULL);
 
         vTaskDelay(pdMS_TO_TICKS(3000)); // 非阻塞延时
diff --git a/Source/EC800M_4G.h b/Source/EC800M_4G.h
index 926b5a6..706f194 100644
--- a/Source/EC800M_4G.h
+++ b/Source/EC800M_4G.h
@@ -33,7 +33,12 @@
 #define EC800M_4G_UART_BAUD_RATE 115200
 
 #define TCP_MAX_RETRY 3         // TCP建立最大重试次数
-#define _4G_DATA_LENGTH 8192
+#define _4G_DATA_LENGTH 8192    // 数组最大长度
+
+#define SERVER_HOST "123.60.29.178"   // TCP服务器IP
+#define SERVER_POER 8009            // TCP服务器端口
+
+#define _QIOPEN "AT+QIOPEN=1,0,\"TCP\",\"%s\",%d,0,1\r\n"
 
 extern void EC800M_4G(void *p);
 
diff --git a/Source/main.c b/Source/main.c
index 17affb7..4433535 100644
--- a/Source/main.c
+++ b/Source/main.c
@@ -29,6 +29,7 @@ void Led_Blinky(void *pvParameters)
     while (1) {
         vTaskDelay(pdMS_TO_TICKS(500));
         gpio_put(LED_PIN, 1);
+        
         vTaskDelay(pdMS_TO_TICKS(500));
         gpio_put(LED_PIN, 0);
     }