diff --git a/designer_base/src/com/fr/design/extra/PluginHelper.java b/designer_base/src/com/fr/design/extra/PluginHelper.java
index b258d495d..5d0c9fa1a 100644
--- a/designer_base/src/com/fr/design/extra/PluginHelper.java
+++ b/designer_base/src/com/fr/design/extra/PluginHelper.java
@@ -140,14 +140,6 @@ public class PluginHelper {
         List<PluginDependenceUnit> list = dependence.getDependPlugins();
         for (int i = 0;list != null && i < list.size(); i++){
             PluginDependenceUnit dependenceUnit = list.get(i);
-            //覆盖型依赖，立即下载安装
-            if (dependenceUnit.isCover()){
-                try {
-                    installCoverDependence(dependenceUnit);
-                } catch (Exception e) {
-                    throw new PluginDependenceException();
-                }
-            }
             if (!dependenceUnit.checkFileEnv()){
                 needInstallDependence.add(dependenceUnit);
             }
@@ -161,31 +153,6 @@ public class PluginHelper {
         installDependenceOnline(currentID, needInstallDependence);
     }
 
-    public static void installCoverDependence(PluginDependenceUnit dependenceUnit) throws Exception {
-        HttpClient httpClient = new HttpClient(SiteCenter.getInstance().acquireUrlByKind(dependenceUnit.getDependenceID()));
-        if (httpClient.getResponseCode() == HttpURLConnection.HTTP_OK) {
-            InputStream reader = httpClient.getResponseStream();
-            String temp = StableUtils.pathJoin(PluginHelper.DEPENDENCE_DOWNLOAD_PATH, PluginHelper.TEMP_FILE);
-            StableUtils.makesureFileExist(new File(temp));
-            FileOutputStream writer = new FileOutputStream(temp);
-            byte[] buffer = new byte[PluginConstants.BYTES_NUM];
-            int bytesRead = 0;
-            while ((bytesRead = reader.read(buffer)) > 0) {
-                writer.write(buffer, 0, bytesRead);
-                buffer = new byte[PluginConstants.BYTES_NUM];
-            }
-            reader.close();
-            writer.flush();
-            writer.close();
-
-
-            //安装文件
-            IOUtils.unZipFilesGBK(temp, FRContext.getCurrentEnv().getPath() + dependenceUnit.getDependenceDir());
-        }else {
-            throw new PluginDependenceException();
-        }
-    }
-
 
     /**
      * 构造一个下载UI