diff --git a/models/cloudbrain.go b/models/cloudbrain.go
index b552ecde8..6652647dc 100755
--- a/models/cloudbrain.go
+++ b/models/cloudbrain.go
@@ -2424,7 +2424,7 @@ type DatasetInfo struct {
 	DataLocalPath string
 	Name          string
 	FullName      string
-	Size          int64
+	Size          int
 }
 
 func GetDatasetInfo(uuidStr string, grampusType ...string) (map[string]DatasetInfo, string, error) {
@@ -2480,7 +2480,7 @@ func GetDatasetInfo(uuidStr string, grampusType ...string) (map[string]DatasetIn
 			DataLocalPath: dataLocalPath,
 			Name:          fileName,
 			FullName:      attach.Name,
-			Size:          attach.Size,
+			Size:          int(attach.Size / (1024 * 1024 * 1024)), //GB
 		}
 		if i == 0 {
 			datasetNames = attach.Name
diff --git a/modules/setting/setting.go b/modules/setting/setting.go
index ed09de790..5f4eeb53e 100755
--- a/modules/setting/setting.go
+++ b/modules/setting/setting.go
@@ -518,7 +518,7 @@ var (
 	MaxDatasetNum          int
 	CullIdleTimeout        string
 	CullInterval           string
-	DebugDatasetSize       int64
+	DebugDatasetSize       int
 
 	//benchmark config
 	IsBenchmarkEnabled     bool
@@ -1480,6 +1480,7 @@ func NewContext() {
 	MaxDatasetNum = sec.Key("MAX_DATASET_NUM").MustInt(5)
 	CullIdleTimeout = sec.Key("CULL_IDLE_TIMEOUT").MustString("900")
 	CullInterval = sec.Key("CULL_INTERVAL").MustString("60")
+	DebugDatasetSize = sec.Key("DEBUG_DATASET_SIZE").MustInt(15)
 
 	sec = Cfg.Section("benchmark")
 	IsBenchmarkEnabled = sec.Key("ENABLED").MustBool(false)
diff --git a/routers/repo/cloudbrain.go b/routers/repo/cloudbrain.go
index 05376f138..a01ef20e7 100755
--- a/routers/repo/cloudbrain.go
+++ b/routers/repo/cloudbrain.go
@@ -296,9 +296,16 @@ func cloudBrainCreate(ctx *context.Context, form auth.CreateCloudBrainForm) {
 
 		if jobType == string(models.JobTypeDebug) {
 			for _, infos := range datasetInfos {
-				log.Info("the size of dataset", infos.Size)
+				log.Info("the size of dataset(GB):", infos.Size)
+
+				if infos.Size > int(setting.DebugDatasetSize) {
+					log.Info("datasize exceed limit:", infos.Size)
+					log.Error("The DatasetSize exceeds the limit (%d)", int(setting.DebugDatasetSize))
+					cloudBrainNewDataPrepare(ctx, jobType)
+					ctx.RenderWithErr(ctx.Tr("cloudbrain.error.debug_datasetsize"), tpl, &form)
+					return
+				}
 			}
-
 		}
 	}