diff --git a/lib/client/console.js b/lib/client/console.js
index 19b8ed7d..e30b7fe4 100644
--- a/lib/client/console.js
+++ b/lib/client/console.js
@@ -122,12 +122,14 @@ var CloudCmd, Util, DOM, $;
         function log(msg, status) {
             var ret;
             
-            Buffer[status] += msg;
-            ret             = Util.isContainStr(Buffer[status], '\n');
-            
-            if (jqconsole && ret) {
-                jqconsole.Write(Buffer[status], status + '-msg');
-                Buffer[status] = '';
+            if (msg) {
+                Buffer[status] += msg;
+                ret             = Util.isContainStr(Buffer[status], '\n');
+                
+                if (jqconsole && ret) {
+                    jqconsole.Write(Buffer[status], status + '-msg');
+                    Buffer[status] = '';
+                }
             }
         }