diff --git a/applications/common/script/admin.py b/applications/common/script/admin.py
index a13d65a..625fcc7 100644
--- a/applications/common/script/admin.py
+++ b/applications/common/script/admin.py
@@ -137,14 +137,23 @@ def import_logic(file_path, is_force):
                 user.role = roles
         db.session.commit()
 
-        # 5. 导入公开导航（Nav 表）
+        # 5. 导入公开导航（Nav 表）—— 幂等：按 id 或 url 去重，避免每次启动重复插入
         from applications.models import Nav
         count_nav = 0
+        existing_urls = {row[0] for row in db.session.query(Nav.url).all()}
         for item in raw_data.get("navs", []):
             item = parse_time(item)
-            if not Nav.query.get(item.get('id')) if item.get('id') else True:
-                db.session.add(Nav(**item))
-                count_nav += 1
+            # 已存在相同主键 id 则跳过
+            if item.get("id") and Nav.query.get(item["id"]):
+                continue
+            # 已存在相同 url 则跳过（典型场景：用户真实导航已覆盖种子数据，避免重复）
+            url = item.get("url")
+            if url and url in existing_urls:
+                continue
+            db.session.add(Nav(**item))
+            count_nav += 1
+            if url:
+                existing_urls.add(url)
         db.session.commit()
 
         click.echo(f"导入成功! 新增: 部门{count_dept}, 权限{count_power}, 角色{count_role}, 用户{count_user}, 导航{count_nav}")