diff --git a/bin/macaca-client-run b/bin/macaca-client-run
index fc56380..532b585 100755
--- a/bin/macaca-client-run
+++ b/bin/macaca-client-run
@@ -88,7 +88,10 @@ runner.on('data', function(data) {
   if (chunks) {
     chunks.push(format(data, 'html'));
   }
-  logger.info(format(data, 'tty'));
+  var log = format(data, 'tty');
+  if (log !== 'null') {
+    logger.info(log);
+  }
 });
 
 runner.on('error', function(err) {
diff --git a/lib/common/logFormatter/index.js b/lib/common/logFormatter/index.js
index 564facb..fc57458 100644
--- a/lib/common/logFormatter/index.js
+++ b/lib/common/logFormatter/index.js
@@ -13,6 +13,7 @@
 
 'use strict';
 
+var logger = require('../logger');
 var screenshot = require('./screenshot');
 var performance = require('./performance');
 
@@ -30,7 +31,8 @@ function handler(type, log, contentType) {
       if (contentType === 'html') {
         return screenshot(log);
       } else if (contentType === 'tty') {
-        return log;
+        logger.debug(log);
+        return null;
       }
       break;
     case 'performance':
@@ -49,7 +51,7 @@ function format(logs, contentType) {
     var log = arr[1];
     if (type && log) {
       var res = handler(type, log, contentType);
-      if (res) {
+      if (res !== '') {
         return res;
       }
     }
diff --git a/package.json b/package.json
index 9f7b1fb..4a51d1d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "macaca-client",
-  "version": "1.0.19",
+  "version": "1.0.20",
   "description": "Macaca automation client",
   "keywords": [
     "automation",