diff --git a/lib/data/services/storage.dart b/lib/data/services/storage.dart
index 9239efa..12a4c20 100644
--- a/lib/data/services/storage.dart
+++ b/lib/data/services/storage.dart
@@ -1,3 +1,5 @@
+import 'dart:convert';
+
 import 'package:get/get.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
@@ -23,6 +25,16 @@ class StorageService extends GetxService {
     return await _prefs.setStringList(key, value);
   }
 
+  Future<bool> setJSON(String key, dynamic jsonVal) {
+    String jsonString = jsonEncode(jsonVal);
+    return _prefs.setString(key, jsonString);
+  }
+
+  dynamic getJSON(String key) {
+    String? jsonString = _prefs.getString(key);
+    return jsonString == null ? null : jsonDecode(jsonString);
+  }
+
   String getString(String key) {
     return _prefs.getString(key) ?? '';
   }
diff --git a/lib/utils/net_cache.dart b/lib/utils/net_cache.dart
index 6a1e162..1fbbbe6 100644
--- a/lib/utils/net_cache.dart
+++ b/lib/utils/net_cache.dart
@@ -2,6 +2,7 @@ import 'dart:collection';
 
 import 'package:dio/dio.dart';
 import 'package:news_getx/config/cache.dart';
+import 'package:news_getx/data/services/storage.dart';
 
 class CacheObject {
   Response response;
@@ -28,22 +29,34 @@ class NetCache extends Interceptor {
   void onRequest(RequestOptions options, RequestInterceptorHandler handler) {
     // refresh标记是否是"下拉刷新"
     bool refresh = options.extra['refresh'] == true;
+    // 是否磁盘缓存
+    bool cacheDisk = options.extra['cacheDisk'] == true;
+
+    // 如果是下拉刷新，先删除相关缓存
     if (refresh) {
       // 如果是下拉刷新，先删除相关缓存
       if (options.extra['list']) {
         //若是列表，则只要url中包含当前path的缓存全部删除（简单实现，并不精准）
         cache.removeWhere((key, value) => key.contains(options.path));
       } else {
+        // 如果不是列表，则只删除uri相同的缓存
         cacheDelete(options.uri.toString());
       }
+
+      // 删除磁盘缓存
+      if (cacheDisk) {
+        StorageService.to.remove(options.uri.toString());
+      }
     }
 
     // get 请求，开启缓存
     if (options.extra['noCache'] != true &&
         options.method.toLowerCase() == "get") {
       String key = options.extra['cacheKey'] ?? options.uri.toString();
-      var ob = cache[key];
 
+      // 策略 1 内存缓存优先，2 然后才是磁盘缓存
+      var ob = cache[key];
+      // 1 内存缓存
       if (ob != null) {
         //若缓存未过期，则返回缓存内容
         if ((DateTime.now().millisecondsSinceEpoch - ob.timestamp) / 1000 <
@@ -58,6 +71,15 @@ class NetCache extends Interceptor {
           cacheDelete(key);
         }
       }
+
+      // 2 磁盘缓存
+      if (cacheDisk) {
+        var cacheData = StorageService.to.getJSON(key);
+        if (cacheData) {
+          handler.resolve(cacheData.response);
+          return;
+        }
+      }
     }
 
     super.onRequest(options, handler);
@@ -80,7 +102,15 @@ class NetCache extends Interceptor {
         cacheDelete(cache.keys.first);
       }
 
+      // 策略：内存、磁盘都写缓存
+
       String key = options.extra['cacheKey'] ?? options.uri.toString();
+
+      // 磁盘缓存
+      if (options.extra["cacheDisk"] == true) {
+         StorageService.to.setJSON(key, CacheObject(response));
+      }
+
       cache[key] = CacheObject(response);
     }
   }