diff --git a/app/services/cmd_service/cmd_service.go b/app/services/cmd_service/cmd_service.go
index 46ea9cc..68c1afa 100644
--- a/app/services/cmd_service/cmd_service.go
+++ b/app/services/cmd_service/cmd_service.go
@@ -268,6 +268,9 @@ func ListToRep(list []croncmdmodel.CronCmd) (cmdList []backend.CmdListResponse,
 			var users []string
 			for _, v := range strings.Split(in.UserIds, ",") {
 				intVal, _ := strconv.Atoi(v)
+				if _, exist := userMap[intVal]; !exist {
+					continue
+				}
 				users = append(users, userMap[intVal].Name)
 			}
 			d.Users = strings.Join(users, ",")