diff --git a/README.md b/README.md
index 9c03556..23e31e8 100644
--- a/README.md
+++ b/README.md
@@ -105,4 +105,10 @@ README:
 
 
 
+```
+
+```
+TODO:
+    1. 每次蓝牙连接，连接上之后默认关闭预览
+
 ```
\ No newline at end of file
diff --git a/app/src/basic_service/app_event.h b/app/src/basic_service/app_event.h
index 587ef3e..5b59483 100644
--- a/app/src/basic_service/app_event.h
+++ b/app/src/basic_service/app_event.h
@@ -26,6 +26,7 @@ typedef struct {
     uint8_t* capture_data_cache;                // 实时采样数据，数据长度为256字节
     struct {
       uint32_t    frameIndex;
+      uint32_t    timestamp;
       one_frame_t data[LITTLE_DATA_BLOCK_FRAME_NUM];
     } little_data_block;
   } val;
diff --git a/app/src/service/ble_cmd_processer/ble_cmd_process_service.c b/app/src/service/ble_cmd_processer/ble_cmd_process_service.c
index 76ed49c..3ab5960 100644
--- a/app/src/service/ble_cmd_processer/ble_cmd_process_service.c
+++ b/app/src/service/ble_cmd_processer/ble_cmd_process_service.c
@@ -78,6 +78,10 @@ void ble_cmder_try_report_one_sample_data(app_event_t* event) {
     reportpacket->data[i * 4 + 2] = (event->val.little_data_block.data[i] >> 16) & 0xFF;
     reportpacket->data[i * 4 + 3] = (event->val.little_data_block.data[i] >> 24) & 0xFF;
   }
+  reportpacket->data[LITTLE_DATA_BLOCK_FRAME_NUM * 4]     = (event->val.little_data_block.timestamp >> 0) & 0xFF;
+  reportpacket->data[LITTLE_DATA_BLOCK_FRAME_NUM * 4 + 1] = (event->val.little_data_block.timestamp >> 8) & 0xFF;
+  reportpacket->data[LITTLE_DATA_BLOCK_FRAME_NUM * 4 + 2] = (event->val.little_data_block.timestamp >> 16) & 0xFF;
+  reportpacket->data[LITTLE_DATA_BLOCK_FRAME_NUM * 4 + 3] = (event->val.little_data_block.timestamp >> 24) & 0xFF;
 
   STATIC_ASSERT(sizeof(one_frame_t) == 4);
 
@@ -90,7 +94,7 @@ void ble_cmder_try_report_one_sample_data(app_event_t* event) {
   // reportpacket->data[8] = (data4 >> 0) & 0xFF;  // 第五帧数据
   // reportpacket->data[9] = (data4 >> 8) & 0xFF;  // 第五帧数据
 
-  uint16_t sendlen = sizeof(heartrate_report_packet_t) + LITTLE_DATA_BLOCK_FRAME_NUM * 4;
+  uint16_t sendlen = sizeof(heartrate_report_packet_t) + LITTLE_DATA_BLOCK_FRAME_NUM * 4 + 4;
   zdatachannel_data_send2(reportbuf, sendlen);
   return;
 }
diff --git a/app/src/service/heart_wave_sample_service/heart_ware_sample_data_mgr.c b/app/src/service/heart_wave_sample_service/heart_ware_sample_data_mgr.c
index 0f6334c..ecf7ab1 100644
--- a/app/src/service/heart_wave_sample_service/heart_ware_sample_data_mgr.c
+++ b/app/src/service/heart_wave_sample_service/heart_ware_sample_data_mgr.c
@@ -57,6 +57,7 @@ static inline void preview_data_trigger_event() {
   for (uint32_t i = 0; i < LITTLE_DATA_BLOCK_FRAME_NUM; i++) {
     event.val.little_data_block.data[i] = m_prepare_data_cache[i];
   }
+  event.val.little_data_block.timestamp = znordic_getpower_on_ms();
   event.val.little_data_block.frameIndex = m_frame_index - LITTLE_DATA_BLOCK_FRAME_NUM;
   AppEvent_pushEvent(&event);
 }
diff --git a/app/src/service/heart_wave_sample_service/heart_wave_sample_data_pre_process.c b/app/src/service/heart_wave_sample_service/heart_wave_sample_data_pre_process.c
index 367e652..39d3fbc 100644
--- a/app/src/service/heart_wave_sample_service/heart_wave_sample_data_pre_process.c
+++ b/app/src/service/heart_wave_sample_service/heart_wave_sample_data_pre_process.c
@@ -8,5 +8,5 @@ void hwsd_pre_processer_process(one_frame_t framdata) {  //
   m_displaydata = framdata;
 }
 
-one_frame_t    hwsd_pre_processer_get_display_data() { return m_displaydata; }
+one_frame_t hwsd_pre_processer_get_display_data() { return m_displaydata; }
 one_frame_t hwsd_pre_processer_get_storage_data() { return m_datacache; }