diff --git a/backend/src/main/java/io/metersphere/excel/domain/TestCaseExcelData.java b/backend/src/main/java/io/metersphere/excel/domain/TestCaseExcelData.java
index 6ec26f668b..c04bea2fc6 100644
--- a/backend/src/main/java/io/metersphere/excel/domain/TestCaseExcelData.java
+++ b/backend/src/main/java/io/metersphere/excel/domain/TestCaseExcelData.java
@@ -23,7 +23,6 @@ public class TestCaseExcelData {
     @Pattern(regexp = "^(?!.*//).*$", message = "格式不正确")
     private String nodePath;
 
-
     @NotBlank
     @ExcelProperty("用例类型")
     @Pattern(regexp = "(^functional$)|(^performance$)|(^api$)", message = "必须为functional、performance、api")
diff --git a/backend/src/main/java/io/metersphere/excel/listener/TestCaseDataListener.java b/backend/src/main/java/io/metersphere/excel/listener/TestCaseDataListener.java
index 268a444328..6e53148a3f 100644
--- a/backend/src/main/java/io/metersphere/excel/listener/TestCaseDataListener.java
+++ b/backend/src/main/java/io/metersphere/excel/listener/TestCaseDataListener.java
@@ -41,6 +41,9 @@ public class TestCaseDataListener extends EasyExcelListener<TestCaseExcelData> {
         if ( nodePath.split("/").length > TestCaseConstants.MAX_NODE_DEPTH + 1) {
             stringBuilder.append("节点最多为" + TestCaseConstants.MAX_NODE_DEPTH + "层;");
         }
+        if ( nodePath.trim().contains(" ")) {
+            stringBuilder.append("所属模块不能包含空格");
+        }
         if (!userNames.contains(data.getMaintainer())) {
             stringBuilder.append("该工作空间下无该用户：" + data.getMaintainer() + ";");
         }
diff --git a/backend/src/main/java/io/metersphere/service/TestCaseNodeService.java b/backend/src/main/java/io/metersphere/service/TestCaseNodeService.java
index 5be4e3e16b..d790c20012 100644
--- a/backend/src/main/java/io/metersphere/service/TestCaseNodeService.java
+++ b/backend/src/main/java/io/metersphere/service/TestCaseNodeService.java
@@ -228,6 +228,7 @@ public class TestCaseNodeService {
                 pathIterator.remove();
 
                 rootNodeName = pathIterator.next().trim();
+                //原来没有，新建的树nodeTrees也不包含
                 for (TestCaseNodeDTO nodeTree : nodeTrees) {
                     if (StringUtils.equals(rootNodeName, nodeTree.getName())) {
                         hasNode = true;
@@ -237,6 +238,7 @@ public class TestCaseNodeService {
                 }
             }
 
+
             if (!hasNode) {
                 createNodeByPath(pathIterator, rootNodeName, null, projectId, 1, "", pathMap);
             }
@@ -297,20 +299,34 @@ public class TestCaseNodeService {
 
         StringBuilder path = new StringBuilder(rootPath);
 
-        Integer pid = insertTestCaseNode(nodeName, pNode == null ? null : pNode.getId(), projectId, level);
         path.append("/" + nodeName);
-        pathMap.put(path.toString(), pid);
+
+        Integer pid = null;
+        //创建过不创建
+        if (pathMap.get(path.toString()) != null) {
+            pid = pathMap.get(path.toString());
+            level++;
+        } else {
+            pid = insertTestCaseNode(nodeName, pNode == null ? null : pNode.getId(), projectId, level);
+            pathMap.put(path.toString(), pid);
+        }
+
         while (pathIterator.hasNext()) {
             String nextNodeName = pathIterator.next();
             path.append("/" + nextNodeName);
-            pid = insertTestCaseNode(nextNodeName, pid, projectId, ++level);
-            pathMap.put(path.toString(), pid);
+            if (pathMap.get(path.toString()) != null) {
+                pid = pathMap.get(path.toString());
+                level++;
+            } else {
+                pid = insertTestCaseNode(nextNodeName, pid, projectId, level);
+                pathMap.put(path.toString(), pid);
+            }
         }
     }
 
-    private Integer insertTestCaseNode(String nodName, Integer pId, String projectId, Integer level) {
+    private Integer insertTestCaseNode(String nodeName, Integer pId, String projectId, Integer level) {
         TestCaseNode testCaseNode = new TestCaseNode();
-        testCaseNode.setName(nodName.trim());
+        testCaseNode.setName(nodeName.trim());
         testCaseNode.setpId(pId);
         testCaseNode.setProjectId(projectId);
         testCaseNode.setCreateTime(System.currentTimeMillis());