diff --git a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrOrgSyncService.java b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrOrgSyncService.java
index 054ce95a..875004d0 100644
--- a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrOrgSyncService.java
+++ b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrOrgSyncService.java
@@ -302,21 +302,34 @@ public class AihrOrgSyncService {
     }
 
     private static ExternalDirectoryNode directoryNode(JsonNode item, String nodeType) {
-        String externalId = switch (nodeType) {
+        String rawExternalId = switch (nodeType) {
             case "GROUP" -> firstNonBlank(text(item, "id", "group_id", "groupId"));
             case "COMPANY" -> firstNonBlank(text(item, "id", "company_id", "companyId"));
             case "PROJECT" -> firstNonBlank(text(item, "id", "project_id", "projectId"));
             case "DEPARTMENT" -> firstNonBlank(text(item, "id", "department_id", "departmentId", "dept_id", "deptId"));
             default -> "";
         };
-        if (externalId.isBlank()) {
+        if (rawExternalId.isBlank()) {
             return null;
         }
+        String externalId = stableDirectoryId(nodeType, rawExternalId);
         String parentExternalId = switch (nodeType) {
-            case "GROUP" -> firstNonBlank(text(item, "parent_group_id", "parentGroupId", "parent_id", "parentId"));
-            case "COMPANY" -> firstNonBlank(text(item, "group_id", "groupId", "parent_group_id", "parentGroupId", "parent_id", "parentId"));
-            case "PROJECT" -> firstNonBlank(text(item, "company_id", "companyId", "group_id", "groupId", "parent_id", "parentId"));
-            case "DEPARTMENT" -> firstNonBlank(text(item, "project_id", "projectId", "company_id", "companyId", "group_id", "groupId", "parent_id", "parentId"));
+            case "GROUP" -> stableDirectoryId("GROUP", firstNonBlank(text(item, "parent_group_id", "parentGroupId", "parent_id", "parentId")));
+            case "COMPANY" -> firstNonBlank(
+                stableDirectoryId("GROUP", text(item, "group_id", "groupId", "parent_group_id", "parentGroupId")),
+                stableDirectoryId("GROUP", text(item, "parent_id", "parentId"))
+            );
+            case "PROJECT" -> firstNonBlank(
+                stableDirectoryId("COMPANY", text(item, "company_id", "companyId")),
+                stableDirectoryId("GROUP", text(item, "group_id", "groupId")),
+                stableDirectoryId("COMPANY", text(item, "parent_id", "parentId"))
+            );
+            case "DEPARTMENT" -> firstNonBlank(
+                stableDirectoryId("PROJECT", text(item, "project_id", "projectId")),
+                stableDirectoryId("COMPANY", text(item, "company_id", "companyId")),
+                stableDirectoryId("GROUP", text(item, "group_id", "groupId")),
+                stableDirectoryId("DEPARTMENT", text(item, "parent_id", "parentId"))
+            );
             default -> "";
         };
         if (externalId.length() > 128 || parentExternalId.length() > 128) {
@@ -332,6 +345,26 @@ public class AihrOrgSyncService {
         return new ExternalDirectoryNode(externalId, parentExternalId, nodeType, truncate(name, 200));
     }
 
+    static String rawDirectoryId(String stableId, String nodeType) {
+        String prefix = directoryIdPrefix(nodeType);
+        return stableId != null && stableId.startsWith(prefix) ? stableId.substring(prefix.length()) : clean(stableId);
+    }
+
+    private static String stableDirectoryId(String nodeType, String rawId) {
+        String value = clean(rawId);
+        return value.isBlank() ? "" : directoryIdPrefix(nodeType) + value;
+    }
+
+    private static String directoryIdPrefix(String nodeType) {
+        return switch (nodeType) {
+            case "GROUP" -> "G:";
+            case "COMPANY" -> "C:";
+            case "PROJECT" -> "P:";
+            case "DEPARTMENT" -> "D:";
+            default -> throw new IllegalArgumentException("不支持的组织节点类型：" + nodeType);
+        };
+    }
+
     private List<JsonNode> fetchSnapshot(String baseUrl, String token, SyncRequest req, String resourceType,
                                          int pageSize, int maxPages) {
         List<JsonNode> items = new ArrayList<>();
diff --git a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrTenantOrgGovernanceService.java b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrTenantOrgGovernanceService.java
index 1d8e967c..e64e0ef5 100644
--- a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrTenantOrgGovernanceService.java
+++ b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrTenantOrgGovernanceService.java
@@ -227,10 +227,11 @@ public class AihrTenantOrgGovernanceService {
         String groupId = null;
         String companyId = null;
         String departmentId = null;
+        String sourceExternalId = AihrOrgSyncService.rawDirectoryId(binding.rootExternalId(), binding.rootNodeType());
         switch (binding.rootNodeType()) {
-            case "GROUP" -> groupId = binding.rootExternalId();
-            case "COMPANY" -> companyId = binding.rootExternalId();
-            case "DEPARTMENT" -> departmentId = binding.rootExternalId();
+            case "GROUP" -> groupId = sourceExternalId;
+            case "COMPANY" -> companyId = sourceExternalId;
+            case "DEPARTMENT" -> departmentId = sourceExternalId;
             default -> throw new ServiceException("ORG_SCOPE_TYPE_NOT_SYNCABLE", HttpStatus.CONFLICT);
         }
         SyncRequest source = requested == null
diff --git a/backend/ruoyi-modules/ruoyi-aihr/src/test/java/org/dromara/aihr/service/AihrOrgSyncServiceTest.java b/backend/ruoyi-modules/ruoyi-aihr/src/test/java/org/dromara/aihr/service/AihrOrgSyncServiceTest.java
index a185d03c..2bf4c636 100644
--- a/backend/ruoyi-modules/ruoyi-aihr/src/test/java/org/dromara/aihr/service/AihrOrgSyncServiceTest.java
+++ b/backend/ruoyi-modules/ruoyi-aihr/src/test/java/org/dromara/aihr/service/AihrOrgSyncServiceTest.java
@@ -296,10 +296,10 @@ public class AihrOrgSyncServiceTest {
         HttpServer server = HttpServer.create(new InetSocketAddress("127.0.0.1", 0), 0);
         server.createContext("/api/open/v1/sync/snapshot", exchange -> {
             String query = exchange.getRequestURI().getRawQuery();
-            String items = query.contains("resource_type=group") ? "[{\"id\":\"G-1\",\"name\":\"银城集团\"}]"
-                : query.contains("resource_type=company") ? "[{\"id\":\"C-1\",\"group_id\":\"G-1\",\"name\":\"南京公司\"}]"
-                : query.contains("resource_type=project") ? "[{\"id\":\"P-1\",\"company_id\":\"C-1\",\"name\":\"翡翠湾项目\"}]"
-                : query.contains("resource_type=department") ? "[{\"id\":\"D-1\",\"project_id\":\"P-1\",\"name\":\"客服部\"}]" : "[]";
+            String items = query.contains("resource_type=group") ? "[{\"id\":\"1\",\"name\":\"银城集团\"}]"
+                : query.contains("resource_type=company") ? "[{\"id\":\"1\",\"group_id\":\"1\",\"name\":\"南京公司\"}]"
+                : query.contains("resource_type=project") ? "[{\"id\":\"1\",\"company_id\":\"1\",\"name\":\"翡翠湾项目\"}]"
+                : query.contains("resource_type=department") ? "[{\"id\":\"1\",\"project_id\":\"1\",\"name\":\"客服部\"}]" : "[]";
             byte[] body = ("{\"data\":{\"items\":" + items + ",\"total\":1,\"has_more\":false}}").getBytes(StandardCharsets.UTF_8);
             exchange.getResponseHeaders().set("Content-Type", "application/json; charset=utf-8");
             exchange.sendResponseHeaders(200, body.length);
@@ -319,9 +319,10 @@ public class AihrOrgSyncServiceTest {
             var snapshot = service.directorySnapshot();
 
             assertEquals(4, snapshot.nodes().size());
-            assertTrue(snapshot.nodes().stream().anyMatch(node -> "GROUP".equals(node.nodeType()) && "G-1".equals(node.externalId())));
+            assertEquals(4, snapshot.nodes().stream().map(node -> node.externalId()).distinct().count());
+            assertTrue(snapshot.nodes().stream().anyMatch(node -> "GROUP".equals(node.nodeType()) && "G:1".equals(node.externalId())));
             assertTrue(snapshot.nodes().stream().anyMatch(node -> "DEPARTMENT".equals(node.nodeType())
-                && "P-1".equals(node.parentExternalId())));
+                && "P:1".equals(node.parentExternalId())));
         } finally {
             server.stop(0);
         }
diff --git a/backend/ruoyi-modules/ruoyi-aihr/src/test/java/org/dromara/aihr/service/AihrTenantOrgGovernanceServiceTest.java b/backend/ruoyi-modules/ruoyi-aihr/src/test/java/org/dromara/aihr/service/AihrTenantOrgGovernanceServiceTest.java
index 7bdb9517..61ee5fff 100644
--- a/backend/ruoyi-modules/ruoyi-aihr/src/test/java/org/dromara/aihr/service/AihrTenantOrgGovernanceServiceTest.java
+++ b/backend/ruoyi-modules/ruoyi-aihr/src/test/java/org/dromara/aihr/service/AihrTenantOrgGovernanceServiceTest.java
@@ -104,10 +104,10 @@ class AihrTenantOrgGovernanceServiceTest {
                 when(resultSet.getString("tenant_id")).thenReturn("000000");
                 when(resultSet.getString("tenant_name")).thenReturn("平台租户");
                 when(resultSet.getString("source_code")).thenReturn(AihrTenantOrgGovernanceService.SOURCE_CODE);
-                when(resultSet.getString("root_external_id")).thenReturn("C-1");
+                when(resultSet.getString("root_external_id")).thenReturn("C:C-1");
                 when(resultSet.getString("root_name")).thenReturn("南京公司");
                 when(resultSet.getString("root_node_type")).thenReturn("COMPANY");
-                when(resultSet.getString("root_path")).thenReturn("G-1/C-1");
+                when(resultSet.getString("root_path")).thenReturn("G:G-1/C:C-1");
                 when(resultSet.getString("mode")).thenReturn(mode);
                 when(resultSet.getString("status")).thenReturn(AihrTenantOrgGovernanceService.ACTIVE);
                 when(resultSet.getString("directory_version")).thenReturn("v1");