diff --git a/Ubiquitous/RT_Thread/bsp/k210/base-drivers/drv_dvp.c b/Ubiquitous/RT_Thread/bsp/k210/base-drivers/drv_dvp.c
index 41cd834e7..6aad225ce 100644
--- a/Ubiquitous/RT_Thread/bsp/k210/base-drivers/drv_dvp.c
+++ b/Ubiquitous/RT_Thread/bsp/k210/base-drivers/drv_dvp.c
@@ -67,8 +67,7 @@ static rt_err_t rt_dvp_init(rt_device_t dev)
     dvp_set_output_enable(0, 1);
     dvp_set_output_enable(1, 1);
     dvp_set_image_format(DVP_CFG_RGB_FORMAT);////////////////
-    // dvp_set_image_size(320, 240);
-    dvp_set_image_size(256, 256);
+    dvp_set_image_size(320, 240);       // default
     dvp_config_interrupt(DVP_CFG_FINISH_INT_ENABLE, 0);
     dvp_disable_auto();
     plic_set_priority(IRQN_DVP_INTERRUPT, 1);
diff --git a/Ubiquitous/RT_Thread/drivers/ov2640/ov2640_source/drv_ov2640.c b/Ubiquitous/RT_Thread/drivers/ov2640/ov2640_source/drv_ov2640.c
index de8aa1f68..d694db7a1 100644
--- a/Ubiquitous/RT_Thread/drivers/ov2640/ov2640_source/drv_ov2640.c
+++ b/Ubiquitous/RT_Thread/drivers/ov2640/ov2640_source/drv_ov2640.c
@@ -1467,20 +1467,31 @@ static rt_err_t rt_ov2640_control(rt_device_t dev, int cmd, void *args)
 {
     RT_ASSERT(dev != RT_NULL);
     rt_err_t ret = RT_EOK;
-    if(cmd < IOCTRL_CAMERA_START_SHOT || cmd > IOCTRL_CAMERA_SET_EXPOSURE)
+    if(cmd < IOCTRL_CAMERA_SET_DVP_RESO || cmd > IOCTRL_CAMERA_SET_EXPOSURE)
     {
         LOG_E("CMD value should be 22 ~29");
         return RT_ERROR;
-    }    
+    }
+
     int value = 0;
     _ioctl_shoot_para shoot_para = {0};
-    
+     #ifdef  BOARD_K210_EVB
+    _ioctl_set_dvp_reso set_dvp_reso = {0};
+    #endif
     if(IOCTRL_CAMERA_START_SHOT == cmd)
     {
         shoot_para = *((_ioctl_shoot_para*)args);
         ret = rt_ov2640_start_shoot(shoot_para.pdata,shoot_para.length);
         return ret;
     }
+    #ifdef  BOARD_K210_EVB
+    else if(IOCTRL_CAMERA_SET_DVP_RESO == cmd)
+    {
+        set_dvp_reso =*((_ioctl_set_dvp_reso*)args);
+        dvp_set_image_size(set_dvp_reso.width, set_dvp_reso.height);
+        return RT_EOK;
+    }
+    #endif
     else
     {
         value = *((int*)args);
diff --git a/Ubiquitous/RT_Thread/drivers/ov2640/ov2640_source/drv_ov2640.h b/Ubiquitous/RT_Thread/drivers/ov2640/ov2640_source/drv_ov2640.h
index a6d0934f1..573b1f4ab 100644
--- a/Ubiquitous/RT_Thread/drivers/ov2640/ov2640_source/drv_ov2640.h
+++ b/Ubiquitous/RT_Thread/drivers/ov2640/ov2640_source/drv_ov2640.h
@@ -123,9 +123,9 @@ extern "C" {
 #define OV2640_SENSOR_HISTO_LOW  0x61
 #define OV2640_SENSOR_HISTO_HIGH 0x62
 
-
-
-
+#ifdef BOARD_K210_EVB
+#define IOCTRL_CAMERA_SET_DVP_RESO     (21)     // set dev resolution
+#endif
 
 #define IOCTRL_CAMERA_START_SHOT       (22)     // start shoot
 #define IOCTRL_CAMERA_SET_RESO         (23)     //set resolution
@@ -136,6 +136,14 @@ extern "C" {
 #define IOCTRL_CAMERA_SET_EFFECT       (28)     //set effect
 #define IOCTRL_CAMERA_SET_EXPOSURE     (29)     //set auto exposure
 
+#ifdef BOARD_K210_EVB
+typedef struct 
+{
+    uint32_t width;         // width   The width  of image
+    uint32_t height;        // height  The height of image
+}_ioctl_set_dvp_reso;
+#endif
+
 
 struct camera_device
 {