diff --git a/README.md b/README.md
index a5f92e2..3e2918a 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,7 @@ Client option and arguments:
 - `-b` or `--benchmark` :benchmark mode
 - `-nv` or `--no-verbose` :no progress bar
 - `-t [number]` or `--thread [number]` :set to thread number.
+- `-q` or `--quiet` :no stdout
 
 Available macro:
 
diff --git a/client.c b/client.c
index bafea34..69e8307 100644
--- a/client.c
+++ b/client.c
@@ -141,7 +141,7 @@ int recvData(int sock,const char * filename){
         else perror("recv fail");
         return -1;
     }
-    static char error_meesage_buf[80] = "";
+    char error_meesage_buf[80] = "";
     switch(res.res){
         case RES_ERR:
             fprintf(stderr,"Server Fail: %s\n", strerror(res.err_number));
@@ -166,10 +166,12 @@ int recvData(int sock,const char * filename){
     return 0;
 }
 
+static bool quiet_mode = false;
 int SendOpAndReceiveFile(const char * filename, struct sockaddr const * addr){
     int sock;
     int ret = -1;
-    fprintf(stdout,"request %s\n",filename);
+    if(!quiet_mode)
+        fprintf(stdout,"request %s\n",filename);
         
     sock = socket(AF_INET,SOCK_STREAM,0);
     if(sock < 0){
@@ -329,6 +331,7 @@ static struct {
     in_port_t server_port;
     bool stdinisatty;
     int thread_number_option;
+    bool quiet_mode;
 } cmd_args = {
     .server_name = "",
     .server_port = 0
@@ -358,6 +361,7 @@ static int parse_arg(int argc,const char *argv[]){
         fprintf(stderr,"port invalid\n");
         return -1;
     }
+    cmd_args.quiet_mode = false;
     cmd_args.thread_number_option = 1;
     for(cur = 3;cur < argc; cur++){
         if (strcmp("-b",argv[cur])==0||strcmp("--benchmark",argv[cur])==0){
@@ -382,6 +386,10 @@ static int parse_arg(int argc,const char *argv[]){
             show_help_message(stdout,argv[0]);
             return 0;
         }
+        else if(strcmp("-q",argv[cur]) == 0 || strcmp("--quiet",argv[cur]) == 0){
+            cmd_args.quiet_mode = true;
+            quiet_mode = true;
+        }
         else break;
     }
     if (cmd_args.stdinisatty){
@@ -390,7 +398,6 @@ static int parse_arg(int argc,const char *argv[]){
     else{
         init_queue_from_file(&global_state.queue,stdin);
     }
-    
     return 0;
 }