diff --git a/designer-base/src/main/java/com/fr/design/gui/itree/filetree/EnvFileTree.java b/designer-base/src/main/java/com/fr/design/gui/itree/filetree/EnvFileTree.java
index 435d5a465a..e6b2c99d4b 100644
--- a/designer-base/src/main/java/com/fr/design/gui/itree/filetree/EnvFileTree.java
+++ b/designer-base/src/main/java/com/fr/design/gui/itree/filetree/EnvFileTree.java
@@ -201,7 +201,8 @@ public class EnvFileTree extends RefreshableJTree {
         if (filter != null) {
             java.util.List<FileNode> tList = new ArrayList<FileNode>();
             for (int i = 0; i < resFns.length; i++) {
-                if (filter.accept(resFns[i])) {
+                // war包部署下会生成两份classes目录，需要去重一下
+                if (filter.accept(resFns[i]) && !tList.contains(resFns[i])) {
                     tList.add(resFns[i]);
                 }
             }