diff --git a/designer_base/src/com/fr/design/extra/PluginHelper.java b/designer_base/src/com/fr/design/extra/PluginHelper.java
index f7597d383d..ecaa34ea00 100644
--- a/designer_base/src/com/fr/design/extra/PluginHelper.java
+++ b/designer_base/src/com/fr/design/extra/PluginHelper.java
@@ -48,10 +48,7 @@ public class PluginHelper {
      * @param p  下载百分比处理
      */
     public static void downloadPluginFile(String id, String username, String password, Process<Double> p) throws Exception {
-        if (StringUtils.isEmpty(id)) {
-            return;
-        }
-        if (StringUtils.isEmpty(username) || StringUtils.isEmpty(password)) {
+        if (!PluginHelper.invalidUser(id, username, password)) {
             return;
         }
         HttpClient httpClient = new HttpClient(getDownloadPath(id, username, password));
@@ -79,6 +76,16 @@ public class PluginHelper {
         }
     }
 
+    private static boolean invalidUser(String id, String username, String password) {
+        if (StringUtils.isEmpty(id)) {
+            return false;
+        } else if (StringUtils.isEmpty(username) || StringUtils.isEmpty(password)){
+            return false;
+        } else {
+            return true;
+        }
+    }
+
     private static String getDownloadPath(String id, String username, String password) throws Exception {
         HashMap<String, String> map = new HashMap<String, String>();
         map.put("id", id);