diff --git a/accounts/admin.py b/accounts/admin.py
index 07d27c2..3fa052e 100644
--- a/accounts/admin.py
+++ b/accounts/admin.py
@@ -8,8 +8,16 @@ class UserAdmin(DefaultUserAdmin):
     list_display = ("username", "email", "role", "source_manager", "is_active", "is_staff", "last_login")
     list_filter = ("role", "is_active", "is_staff", "is_superuser")
     search_fields = ("username", "email")
-    fieldsets = DefaultUserAdmin.fieldsets + (
-        ("角色权限", {"fields": ("role", "source_manager")}),
-        ("网站权限", {"fields": ("managed_websites", "authorized_websites")}),
-    )
     filter_horizontal = ("groups", "user_permissions", "managed_websites", "authorized_websites")
+
+    def get_fieldsets(self, request, obj=None):
+        base = list(super().get_fieldsets(request, obj))
+        base.append(("角色权限", {"fields": ("role", "source_manager")}))
+
+        if obj:
+            if obj.role == "manager":
+                base.append(("管理权限", {"fields": ("managed_websites",)}))
+            elif obj.role == "user":
+                base.append(("访问权限", {"fields": ("authorized_websites",)}))
+
+        return base
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