diff --git a/Laravel/app/Http/Controllers/API/His/UserController.php b/Laravel/app/Http/Controllers/API/His/UserController.php
index 73b6ed9..3978604 100644
--- a/Laravel/app/Http/Controllers/API/His/UserController.php
+++ b/Laravel/app/Http/Controllers/API/His/UserController.php
@@ -108,10 +108,14 @@ public function SyncUser()
                 ]);
             } else {
                 $updateData = [
-                    'cn_name'       => $item['emplName'],
-                    'department_id' => isset($dept->id) ? $dept->id : null,
-                    'group'         => $user->group_locked == 1 ? $user->group : $group,
+                    'cn_name' => $item['emplName'],
+                    'group'   => $user->group_locked == 1 ? $user->group : $group,
                 ];
+                // 平台科室不覆盖 department_id
+                $deptId = isset($dept->id) ? $dept->id : null;
+                if (!$deptId || $dept->is_workbench != 1) {
+                    $updateData['department_id'] = $deptId;
+                }
                 // 如果之前是禁用状态，同步时恢复启用
                 if ($user->status == 0) {
                     $updateData['status'] = 1;