diff --git a/flutter_app/lib/models/model_manager.dart b/flutter_app/lib/models/model_manager.dart
index 6373019..08241ed 100644
--- a/flutter_app/lib/models/model_manager.dart
+++ b/flutter_app/lib/models/model_manager.dart
@@ -301,7 +301,7 @@ class ModelManager extends ChangeNotifier {
     }
   }
 
-  /// 设置激活状态（true=使用，false=取消）；持久化到 <root>/active.json。
+  /// 设置激活状态（true=使用，false=取消）；持久化到 `root/active.json`。
   /// 未下载的模型不可激活（下载完成由 downloadModel 自动激活）。
   Future<void> setActive(int datasetId, bool active) async {
     final changed =
@@ -344,6 +344,7 @@ class ModelManager extends ChangeNotifier {
       List<ModelCatalogItem> catalog) async {
     final bundles = <ModelBundle>[];
     for (final item in catalog) {
+      if (!_activeIds.contains(item.datasetId)) continue;
       try {
         final dir = await _modelDir(item.datasetId);
         final file = File('${dir.path}/model.tflite');