diff --git a/applications/VK_Client.c b/applications/VK_Client.c
index bcf863b..a5f1482 100644
--- a/applications/VK_Client.c
+++ b/applications/VK_Client.c
@@ -4,12 +4,17 @@
 
 #include "VK_Com.h"
 #include "drv_ec800k.h"
+#include "VK_Log.h"
 #include "rtdef.h"
 #include "rtthread.h"
 #include "rttypes.h"
 #include "VKFly/mavlink.h"
 #include "mavlink_helpers.h"
 
+#define DBG_TAG "LINK_LOG"
+#define DBG_LVL DBG_INFO
+#include "rtdbg.h"
+
 
 char cmd_cmd[100] = {0};
 char cmd_str[100] = {0};
@@ -274,7 +279,7 @@ int16_t client_tcp_connect(Cclient_t *client) {
 
   rt_device_write(lte_dev.com_dev, 0, buf, sizeof(buf));
 
-  hw_printf(buf);
+ //hw_printf(buf);
 #endif
 
   return rtn;
@@ -322,8 +327,7 @@ int16_t client_yield(CLte_dev_t *pLte_dev) {
             if (_no_carrier_t.match_flag == HALF_MATCH) {
               no_carrier_match(pLte_dev->at_buf, len);
               if (_no_carrier_t.match_flag == COMPLETE_MATCH) {
-                rt_kprintf("disconnect!!!\n");
-                hw_printf("disconnect!!!\n");
+                LOG_I("disconnect!!!\n");
                 pLte_dev->client1->connect_sta = false;
                 _no_carrier_t.match_flag = NO_MATCH;
                 break;
diff --git a/applications/drv_ec800k.c b/applications/drv_ec800k.c
index 61ce7f2..d406c7e 100644
--- a/applications/drv_ec800k.c
+++ b/applications/drv_ec800k.c
@@ -8,10 +8,16 @@
 #include "drv_ec800k.h"
 #include <stdint.h>
 #include "VK_Com.h"
+#include "VK_Log.h"
 #include "rtdef.h"
 #include "rtthread.h"
 #include "rttypes.h"
 
+#define DBG_TAG "DTU_LOG"
+#define DBG_LVL DBG_INFO
+#include "rtdbg.h"
+
+
 Cclient_t client1 = {
     .valid = true,
     .mode = "TCP",
@@ -74,8 +80,7 @@ int16_t BSP_LTE_CipSend(uint8_t *pdata, uint32_t length, uint32_t waittime) {
 
 int16_t BSP_LTE_SendCmd(const char *cmd, const char *expect, const char *error,
                         uint32_t waittime) {
-  rt_kprintf("%s\n", cmd);
-  hw_printf("%s\n", cmd);
+  LOG_I("%s\n", cmd);
   BSP_LTE_SendData((uint8_t *)cmd, rt_strlen(cmd));
 
   rt_err_t ret = rt_sem_take(lte_dev.com_dev_rx_sem, waittime);
@@ -86,8 +91,7 @@ int16_t BSP_LTE_SendCmd(const char *cmd, const char *expect, const char *error,
 
     rt_device_read(lte_dev.com_dev, 0, lte_dev.at_buf, sizeof(lte_dev.at_buf));
 
-    rt_kprintf("%s\n", lte_dev.at_buf);
-    hw_printf("%s\n", lte_dev.at_buf);
+    LOG_I("%s\n", lte_dev.at_buf);
     /* 清空缓存 */
     uint8_t c;
     while (rt_device_read(lte_dev.com_dev, 0, &c, 1) == 1) {
@@ -179,7 +183,7 @@ int16_t BSP_LTE_GetCGATT(int16_t retry) {
     }
     retry--;
   } while (retry);
-  rt_kprintf("PS detached:[%s]", lte_dev.at_buf);
+  //rt_kprintf("PS detached:[%s]", lte_dev.at_buf);
   return -1;
 }
 
@@ -293,8 +297,7 @@ void BSP_LTE_Config(void) {
 
   while (0 != BSP_LTE_SendATE(3)) {
     rt_thread_mdelay(500);
-    rt_kprintf("BSP_LTE_SendATE error\n");
-    hw_printf("BSP_LTE_SendATE error\n");
+    LOG_I("BSP_LTE_SendATE error\n");
   }
 
   /*查询模块信息*/
diff --git a/applications/drv_ec800k.h b/applications/drv_ec800k.h
index b770277..61f7940 100644
--- a/applications/drv_ec800k.h
+++ b/applications/drv_ec800k.h
@@ -314,8 +314,6 @@ int16_t BSP_LTE_Send_Cmd_FileRead(const char *cmd, uint16_t len,
 
 void tcp_connect_test(void);
 
-void hw_printf(const char *fmt, ...);
-// void test_ec800k_ota(void);
 
 #ifdef __cplusplus
 }