diff --git a/common/src/main/java/com/xypower/common/MicroPhotoContext.java b/common/src/main/java/com/xypower/common/MicroPhotoContext.java
index 01767292..d21ee354 100644
--- a/common/src/main/java/com/xypower/common/MicroPhotoContext.java
+++ b/common/src/main/java/com/xypower/common/MicroPhotoContext.java
@@ -68,6 +68,7 @@ public class MicroPhotoContext {
         public int separateNetwork = 1; // Default is 1
         public int mpappMonitorTimeout = 30 * 60000;    // 30 minutes
         public int timeForKeepingLogs = 15; // Unit day
+        public boolean syncTime = false;
 
         public String getUrl() {
             if (TextUtils.isEmpty(server)) {
@@ -276,6 +277,7 @@ public class MicroPhotoContext {
             masterConfig.usingAbsHbTime = jsonObject.optInt("usingAbsHbTime", 0);
             masterConfig.separateNetwork = jsonObject.optInt("separateNetwork", 1);
             masterConfig.timeForKeepingLogs = jsonObject.optInt("timeForKeepingLogs", 15);
+            masterConfig.syncTime = jsonObject.optInt("syncTime", 0) != 0;
 
             // masterConfig.mpappMonitorTimeout = jsonObject.optInt("mpappMonitorTimeout", 30 * 60000);
             int mpappMonitorTimeout = jsonObject.optInt("mpappMonitorTimeout", 30 * 60000);
diff --git a/mpmaster/src/main/java/com/xypower/mpmaster/AppMaster.java b/mpmaster/src/main/java/com/xypower/mpmaster/AppMaster.java
index 4380a893..e3941815 100644
--- a/mpmaster/src/main/java/com/xypower/mpmaster/AppMaster.java
+++ b/mpmaster/src/main/java/com/xypower/mpmaster/AppMaster.java
@@ -281,6 +281,11 @@ public class AppMaster {
                     httpURLConnection.setDoOutput(true);
 
                     httpURLConnection.setRequestProperty("Accept-Cmds", "Multiple");
+                    final boolean shouldSyncTime = mService.shouldSyncTime();
+                    final long requestSyncTime = System.currentTimeMillis();
+                    if (shouldSyncTime) {
+                        httpURLConnection.setRequestProperty("ReqSyncTime", Long.toString(requestSyncTime));
+                    }
 
                     // postParams(httpURLConnection.getOutputStream(), postParams);
                     buildParams(httpURLConnection.getOutputStream(), postParams);
@@ -292,6 +297,24 @@ public class AppMaster {
                     if (responseCode == HttpURLConnection.HTTP_OK) {
                         //在子线程中不能操作UI线程，通过handler在UI线程中进行操作
                         // handler.sendEmptyMessage(0x00);
+                        // httpURLConnection.get
+                        try {
+                            if (shouldSyncTime) {
+                                long localResponseTime = System.currentTimeMillis();
+                                Map<String, List<String>> responseHeaders = httpURLConnection.getHeaderFields();
+                                if (responseHeaders != null && responseHeaders.containsKey("ResSyncTime")) {
+                                    List<String> resSyncTimes = responseHeaders.get("ResSyncTime");
+
+                                    if (resSyncTimes != null && !resSyncTimes.isEmpty()) {
+                                        long serverSyncTime = Long.parseLong(resSyncTimes.get(0));
+
+                                        mService.updateTime(serverSyncTime + (localResponseTime - requestSyncTime) / 2);
+                                    }
+                                }
+                            }
+                        } catch (Exception ex) {
+                            ex.printStackTrace();
+                        }
                         String response = convertStreamToString(inputStream);
                         process(response);
                     }
diff --git a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
index 50ecb0e3..694dbdc7 100644
--- a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
+++ b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
@@ -99,6 +99,7 @@ public class MpMasterService extends Service {
     private int mHeartbeatDuration = 600; // Unit: second 10m = 10 * 60s
 
     private long mTimeForKeepingLogs = 86400000 * 15;   // 15 days
+    private boolean mSyncTime = false;
 
     private AlarmReceiver mAlarmReceiver = null;
     private ScreenActionReceiver mScreenaAtionReceiver = null;
@@ -310,6 +311,7 @@ public class MpMasterService extends Service {
         if (masterConfig.timeForKeepingLogs > 0) {
             mTimeForKeepingLogs = masterConfig.timeForKeepingLogs * 86400000;
         }
+        mSyncTime = masterConfig.syncTime;
     }
 
     private void loadIccid() {
@@ -349,6 +351,8 @@ public class MpMasterService extends Service {
         return mMntnMode;
     }
 
+    public boolean shouldSyncTime() { return mSyncTime; }
+
     public void startMpApp() {
         try {
             final Context context = getApplicationContext();
@@ -853,14 +857,6 @@ public class MpMasterService extends Service {
         return JSONUtils.saveJson(path, jsonObject);
     }
 
-    public boolean updateTime(long timeInMillis) {
-        try {
-            SysApi.setSystemTime(getApplicationContext(), timeInMillis);
-        } catch (Exception ex) {
-        }
-        return true;
-    }
-
     public static int getSignalLevel(int num) {
         String result = getSystemProperty("vendor.ril.nw.signalstrength.lte." + Integer.toString(num));
         if (TextUtils.isEmpty(result)) {
@@ -1023,6 +1019,16 @@ public class MpMasterService extends Service {
         System.exit(0);
     }
 
+    public void updateTime(long ms) {
+        Intent intent = new Intent("com.xy.xsetting.action");
+        intent.putExtra("cmd", "settime");
+        intent.putExtra("timemills", ms);
+
+        intent.setPackage("com.android.systemui");
+        intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);
+        sendBroadcast(intent);
+    }
+
     public native static int getInt(int cmd);
     public native static int setInt(int cmd, int val);
     public native static int[] getStats(long ts);