diff --git a/excel-handle/src/main/java/com/ruoyi/excel/wecom/domain/CorpDepartment.java b/excel-handle/src/main/java/com/ruoyi/excel/wecom/domain/CorpDepartment.java
index 135840c..6977f19 100644
--- a/excel-handle/src/main/java/com/ruoyi/excel/wecom/domain/CorpDepartment.java
+++ b/excel-handle/src/main/java/com/ruoyi/excel/wecom/domain/CorpDepartment.java
@@ -6,6 +6,7 @@ import lombok.Getter;
 import lombok.Setter;
 
 import java.io.Serializable;
+import java.util.Date;
 
 @Getter
 @Setter
@@ -22,5 +23,11 @@ public class CorpDepartment implements Serializable {
 
     private Long orderNo;
 
+    private String unitId;
+
     private String name;
+
+    private Date createTime;
+
+    private Date updateTime;
 }
diff --git a/excel-handle/src/main/java/com/ruoyi/excel/wecom/domain/CorpUser.java b/excel-handle/src/main/java/com/ruoyi/excel/wecom/domain/CorpUser.java
index aa5c64b..bd382c0 100644
--- a/excel-handle/src/main/java/com/ruoyi/excel/wecom/domain/CorpUser.java
+++ b/excel-handle/src/main/java/com/ruoyi/excel/wecom/domain/CorpUser.java
@@ -6,6 +6,7 @@ import lombok.Getter;
 import lombok.Setter;
 
 import java.io.Serializable;
+import java.util.Date;
 
 @Getter
 @Setter
@@ -26,4 +27,8 @@ public class CorpUser implements Serializable {
     private String alias;
 
     private String openUserid;
+
+    private Date createTime;
+
+    private Date updateTime;
 }
\ No newline at end of file
diff --git a/excel-handle/src/main/java/com/ruoyi/excel/wecom/service/CustomerExportService.java b/excel-handle/src/main/java/com/ruoyi/excel/wecom/service/CustomerExportService.java
index 8b9a7f9..f9d6d8c 100644
--- a/excel-handle/src/main/java/com/ruoyi/excel/wecom/service/CustomerExportService.java
+++ b/excel-handle/src/main/java/com/ruoyi/excel/wecom/service/CustomerExportService.java
@@ -39,7 +39,7 @@ public class CustomerExportService {
 
     // 缓存映射
     private Map<String, CorpUser> userIdToUserMap = new HashMap<>();
-    private Map<Long, String> departmentIdToNameMap = new HashMap<>();
+    private Map<Long, CorpDepartment> departmentIdToNameMap = new HashMap<>();
     private Map<String, WecomTagDomain> tagIdToTagMap = new HashMap<>();
     private Map<String, WecomTagGroupDomain> tagGroupIdToGroupMap = new HashMap<>();
     private Map<String, List<WecomTagDomain>> tagGroupIdToTagsMap = new HashMap<>();
@@ -55,25 +55,25 @@ public class CustomerExportService {
         // 1. 加载用户数据
         List<CorpUser> userList = corpUserMapper.selectList(null);
         userIdToUserMap = userList.stream()
-                .collect(Collectors.toMap(CorpUser::getUserid, user -> user, (v1, v2) -> v1));
+                .collect(Collectors.toMap(CorpUser::getUserid, user -> user, (v1, v2) -> v1.getUpdateTime().compareTo(v2.getUpdateTime()) >= 0 ? v1 : v2));
         log.debug("已加载 " + userIdToUserMap.size() + " 个用户");
 
         // 2. 加载部门数据
         List<CorpDepartment> departmentList = corpDepartmentMapper.selectList(null);
         departmentIdToNameMap = departmentList.stream()
-                .collect(Collectors.toMap(CorpDepartment::getId, CorpDepartment::getName, (v1, v2) -> v1));
+                .collect(Collectors.toMap(CorpDepartment::getId, department->department, (v1, v2) -> v1.getUpdateTime().compareTo(v2.getUpdateTime()) >= 0 ? v1 : v2));
         log.debug("已加载 " + departmentIdToNameMap.size() + " 个部门");
 
         // 3. 加载标签数据
         List<WecomTagDomain> tagList = wecomTagMapper.selectList(null);
         tagIdToTagMap = tagList.stream()
-                .collect(Collectors.toMap(WecomTagDomain::getTagId, tag -> tag, (v1, v2) -> v1));
+                .collect(Collectors.toMap(WecomTagDomain::getTagId, tag -> tag, (v1, v2) -> v2));
         log.debug("已加载 " + tagIdToTagMap.size() + " 个标签");
 
         // 4. 加载标签组数据
         List<WecomTagGroupDomain> tagGroupList = wecomTagGroupMapper.selectList(null);
         tagGroupIdToGroupMap = tagGroupList.stream()
-                .collect(Collectors.toMap(WecomTagGroupDomain::getTagGroupId, group -> group, (v1, v2) -> v1));
+                .collect(Collectors.toMap(WecomTagGroupDomain::getTagGroupId, group -> group, (v1, v2) -> v2));
         log.debug("已加载 " + tagGroupIdToGroupMap.size() + " 个标签组");
 
         // 5. 构建标签组到标签列表的映射