diff --git a/src/main/java/com/wflow/workflow/service/impl/MemoryOrgOwnershipServiceImpl.java b/src/main/java/com/wflow/workflow/service/impl/MemoryOrgOwnershipServiceImpl.java
index 50d83e4..f917d5e 100644
--- a/src/main/java/com/wflow/workflow/service/impl/MemoryOrgOwnershipServiceImpl.java
+++ b/src/main/java/com/wflow/workflow/service/impl/MemoryOrgOwnershipServiceImpl.java
@@ -28,10 +28,10 @@ import java.util.stream.Collectors;
 public class MemoryOrgOwnershipServiceImpl implements OrgOwnershipService {
 
     //用户ID与其所有层级所属部门ID级联映射
-    private static final Map<String, Set<String>> userDeptMap = new ConcurrentHashMap<>();
+    private static Map<String, Set<String>> userDeptMap = new ConcurrentHashMap<>();
 
     //部门ID与其所有父级部门ID级联关系映射
-    private static final Map<String, Set<String>> deptAndDeptMap = new ConcurrentHashMap<>();
+    private static Map<String, Set<String>> deptAndDeptMap = new ConcurrentHashMap<>();
 
     @Autowired
     private OrgRepositoryService orgRepositoryService;
@@ -96,32 +96,34 @@ public class MemoryOrgOwnershipServiceImpl implements OrgOwnershipService {
      * 实例化时从数据库加载组织架构关系
      */
     @PostConstruct
-    public void loadByDbToCatch(){
+    public void loadByDbToCatch() {
         //查询全量数据
         log.info("开始加载全量组织架构关系数据");
         List<UserDeptDo> userDepartments = orgRepositoryService.getSysAllUserDepts();
         List<DeptDo> departments = orgRepositoryService.getSysAllDepts();
-        userDeptMap.clear();
-        deptAndDeptMap.clear();
+
         //先加载部门级联关系，部门map化
+        // 构建新的临时 Map
+        Map<String, Set<String>> newDeptAndDeptMap = new ConcurrentHashMap<>();
         Map<String, DeptDo> deptMap = departments.stream().collect(Collectors.toMap(DeptDo::getId, v -> v));
         deptMap.forEach((k, v) -> {
             Set<String> set = new LinkedHashSet<>();
             loadCascade(set, deptMap, v);
-            deptAndDeptMap.put(k, set);
+            newDeptAndDeptMap.put(k, set);
         });
         //再加载用户与所属部门的级联关系
+        Map<String, Set<String>> newUserDeptMap = new ConcurrentHashMap<>();
         userDepartments.forEach(ud -> {
             if (ud.getDeptId() != null) {
-                Set<String> userDeptSet = userDeptMap.get(ud.getUserId());
-                if (CollectionUtil.isEmpty(userDeptSet)){
-                    userDeptSet = new LinkedHashSet<>();
-                    userDeptMap.put(ud.getUserId(), userDeptSet);
-                }
+                Set<String> userDeptSet = newUserDeptMap.computeIfAbsent(ud.getUserId(), k -> new LinkedHashSet<>());
                 userDeptSet.add(ud.getDeptId());
-                userDeptSet.addAll(deptAndDeptMap.getOrDefault(ud.getDeptId(), new HashSet<>()));
+                userDeptSet.addAll(newDeptAndDeptMap.getOrDefault(ud.getDeptId(), new HashSet<>()));
             }
         });
+
+        // 原子替换引用
+        deptAndDeptMap = newDeptAndDeptMap;
+        userDeptMap = newUserDeptMap;
     }
 
     /**