diff --git a/src/client/src/tscSystem.c b/src/client/src/tscSystem.c
index 2d7f67a9db99fc2d883e758d179812d806373dac..626baa15a05ad7b8f402972a7636e2ca51a68b6e 100644
--- a/src/client/src/tscSystem.c
+++ b/src/client/src/tscSystem.c
@@ -462,7 +462,7 @@ static int taos_set_config_imp(const char *config){
       continue;
     }
     if(!taosReadConfigOption(item->string, item->valuestring, NULL, NULL, TAOS_CFG_CSTATUS_OPTION)){
-      printf("set failed:%s->%s", item->string, item->valuestring);
+      printf("set failed:%s->%s, paras err or can not set from file", item->string, item->valuestring);
       ret = -2;
     }
   }