diff --git a/routers/repo/cloudbrain.go b/routers/repo/cloudbrain.go
index 7a78f914a..8b93c7e29 100755
--- a/routers/repo/cloudbrain.go
+++ b/routers/repo/cloudbrain.go
@@ -91,7 +91,12 @@ func cutString(str string, lens int) string {
 func jobNamePrefixValid(s string) string {
 	lowStr := strings.ToLower(s)
 	re := regexp.MustCompile(`[^a-z0-9_\\-]+`)
-	return re.ReplaceAllString(lowStr, "")
+	//去掉非法字符
+	removeSpecial := re.ReplaceAllString(lowStr, "")
+	//任务名以数字字母开头，去掉非法前缀
+	re = regexp.MustCompile(`^[_\\-]+`)
+	return re.ReplaceAllString(removeSpecial, "")
+
 }
 
 func cloudBrainNewDataPrepare(ctx *context.Context) error{