diff --git a/src/benchJsonOpt.c b/src/benchJsonOpt.c
index 45f10b83..f458b663 100644
--- a/src/benchJsonOpt.c
+++ b/src/benchJsonOpt.c
@@ -1390,12 +1390,20 @@ static int getMetaFromCommonJsonFile(tools_cJSON *json) {
 
     tools_cJSON *host = tools_cJSON_GetObjectItem(json, "host");
     if (host && host->type == tools_cJSON_String && host->valuestring != NULL) {
-        g_arguments->host = host->valuestring;
+        if(g_arguments->host && strlen(g_arguments->host) > 0) {
+            warnPrint("command line already pass host is %s, json config host(%s) had been ignored.\n", g_arguments->host, host->valuestring);
+        } else {
+            g_arguments->host = host->valuestring;
+        }     
     }
 
     tools_cJSON *port = tools_cJSON_GetObjectItem(json, "port");
     if (port && port->type == tools_cJSON_Number) {
-        g_arguments->port = (uint16_t)port->valueint;
+        if(g_arguments->port != DEFAULT_PORT) {
+            warnPrint("command line already pass port is %d, json config port(%d) had been ignored.\n", g_arguments->port, (uint16_t)port->valueint);
+        } else {
+            g_arguments->port = (uint16_t)port->valueint;
+        }
     }
 
     tools_cJSON *user = tools_cJSON_GetObjectItem(json, "user");