diff --git a/models/cloudbrain.go b/models/cloudbrain.go
index fa9a27bb9..f1a99577b 100755
--- a/models/cloudbrain.go
+++ b/models/cloudbrain.go
@@ -278,7 +278,7 @@ func (task *Cloudbrain) IsRunning() bool {
 }
 
 func ConvertDurationToStr(duration int64) string {
-	if duration == 0 {
+	if duration <= 0 {
 		return DURATION_STR_ZERO
 	}
 	return util.AddZero(duration/3600) + ":" + util.AddZero(duration%3600/60) + ":" + util.AddZero(duration%60)
diff --git a/routers/repo/cloudbrain.go b/routers/repo/cloudbrain.go
index e58ec45c2..27670f23c 100755
--- a/routers/repo/cloudbrain.go
+++ b/routers/repo/cloudbrain.go
@@ -1840,6 +1840,10 @@ func SyncCloudbrainStatus() {
 				oldStatus := task.Status
 				task.Status = grampus.TransTrainJobStatus(result.JobInfo.Status)
 				task.Duration = result.JobInfo.RunSec
+
+				if task.Duration < 0 {
+					task.Duration = 0
+				}
 				task.TrainJobDuration = models.ConvertDurationToStr(task.Duration)
 
 				if task.StartTime == 0 && result.JobInfo.StartedAt > 0 {
diff --git a/routers/repo/grampus.go b/routers/repo/grampus.go
index b204d20da..6ba25137d 100755
--- a/routers/repo/grampus.go
+++ b/routers/repo/grampus.go
@@ -709,6 +709,9 @@ func GrampusTrainJobShow(ctx *context.Context) {
 			task.Status = grampus.TransTrainJobStatus(result.JobInfo.Status)
 			if task.Status != result.JobInfo.Status || result.JobInfo.Status == models.GrampusStatusRunning {
 				task.Duration = result.JobInfo.RunSec
+				if task.Duration < 0 {
+					task.Duration = 0
+				}
 				task.TrainJobDuration = models.ConvertDurationToStr(task.Duration)
 
 				if task.StartTime == 0 && result.JobInfo.StartedAt > 0 {