diff --git a/Nvr.go b/Nvr.go
index 20d58c2..55732ec 100644
--- a/Nvr.go
+++ b/Nvr.go
@@ -134,8 +134,8 @@ func (this *Nvr) CheckTimeRegionWithDay(Year, Month, Day, Channel uint16) ([]Tim
 			} else {
 				EndTimeObj = time.Date(int(FindData.StruStopTime.DwYear), time.Month(FindData.StruStopTime.DwMonth), int(FindData.StruStopTime.DwDay), int(FindData.StruStopTime.DwHour), int(FindData.StruStopTime.DwMinute), int(FindData.StruStopTime.DwSecond), 0, time.UTC)
 			}
-			StartTimeObj = StartTimeObj.Add(time.Minute * time.Duration(ByUTCDiff))
-			EndTimeObj = EndTimeObj.Add(time.Minute * time.Duration(ByUTCDiff))
+			StartTimeObj = StartTimeObj.Add(time.Minute * time.Duration(-ByUTCDiff))
+			EndTimeObj = EndTimeObj.Add(time.Minute * time.Duration(-ByUTCDiff))
 			res = append(res, TimeRange{
 				StartTime: StartTimeObj,
 				EndTime:   EndTimeObj,