diff --git a/app/src/main/java/com/github/catvod/ali/API.java b/app/src/main/java/com/github/catvod/ali/API.java
index a73ba2f0..dda67f14 100644
--- a/app/src/main/java/com/github/catvod/ali/API.java
+++ b/app/src/main/java/com/github/catvod/ali/API.java
@@ -39,7 +39,6 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashMap;
-import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.Executors;
@@ -263,12 +262,12 @@ public class API {
         String result = post("adrive/v3/share_link/get_share_by_anonymous", body);
         JSONObject object = new JSONObject(result);
         List<Item> files = new ArrayList<>();
-        LinkedHashMap<String, List<String>> subMap = new LinkedHashMap<>();
-        listFiles(new Item(getParentFileId(fileId, object)), files, subMap);
+        List<Item> subs = new ArrayList<>();
+        listFiles(new Item(getParentFileId(fileId, object)), files, subs);
         List<String> playFrom = Arrays.asList("原畫", "超清", "高清");
         List<String> episode = new ArrayList<>();
         List<String> playUrl = new ArrayList<>();
-        for (Item file : files) episode.add(file.getDisplayName() + "$" + file.getFileId() + findSubs(file.getName(), subMap));
+        for (Item file : files) episode.add(file.getDisplayName() + "$" + file.getFileId() + findSubs(file.getName(), subs));
         for (int i = 0; i < playFrom.size(); i++) playUrl.add(TextUtils.join("#", episode));
         Vod vod = new Vod();
         vod.setVodId(url);
@@ -281,11 +280,11 @@ public class API {
         return vod;
     }
 
-    private void listFiles(Item folder, List<Item> files, LinkedHashMap<String, List<String>> subMap) throws Exception {
-        listFiles(folder, files, subMap, "");
+    private void listFiles(Item folder, List<Item> files, List<Item> subs) throws Exception {
+        listFiles(folder, files, subs, "");
     }
 
-    private void listFiles(Item parent, List<Item> files, LinkedHashMap<String, List<String>> subMap, String marker) throws Exception {
+    private void listFiles(Item parent, List<Item> files, List<Item> subs, String marker) throws Exception {
         JSONObject body = new JSONObject();
         List<Item> folders = new ArrayList<>();
         body.put("limit", 200);
@@ -301,16 +300,14 @@ public class API {
             } else if (file.getCategory().equals("video") || file.getCategory().equals("audio")) {
                 files.add(file.parent(parent.getName()));
             } else if (Utils.isSub(file.getExt())) {
-                String key = Utils.removeExt(file.getName());
-                if (!subMap.containsKey(key)) subMap.put(key, new ArrayList<>());
-                subMap.get(key).add(key + "@@@" + file.getExt() + "@@@" + file.getFileId());
+                subs.add(file);
             }
         }
         if (item.getNextMarker().length() > 0) {
-            listFiles(parent, files, subMap, item.getNextMarker());
+            listFiles(parent, files, subs, item.getNextMarker());
         }
         for (Item folder : folders) {
-            listFiles(folder, files, subMap);
+            listFiles(folder, files, subs);
         }
     }
 
@@ -324,18 +321,19 @@ public class API {
         return "";
     }
 
-    private String findSubs(String name, Map<String, List<String>> subMap) {
-        name = name.substring(0, name.lastIndexOf("."));
-        List<String> subs = subMap.get(name);
-        if (subs != null && subs.size() > 0) return combineSubs(subs);
-        StringBuilder sb = new StringBuilder();
-        for (Map.Entry<String, List<String>> entry : subMap.entrySet()) sb.append(combineSubs(entry.getValue()));
-        return sb.toString();
+    private void pair(String name1, List<Item> items, List<Item> subs) {
+        for (Item item : items) {
+            String name2 = Utils.removeExt(item.getName()).toLowerCase();
+            if (name1.contains(name2) || name2.contains(name1)) subs.add(item);
+        }
     }
 
-    private String combineSubs(List<String> subs) {
+    private String findSubs(String name1, List<Item> items) {
+        List<Item> subs = new ArrayList<>();
+        pair(Utils.removeExt(name1).toLowerCase(), items, subs);
+        if (subs.isEmpty()) subs.addAll(items);
         StringBuilder sb = new StringBuilder();
-        for (String sub : subs) sb.append("+").append(sub);
+        for (Item sub : subs) sb.append("+").append(Utils.removeExt(sub.getName())).append("@@@").append(sub.getExt()).append("@@@").append(sub.getFileId());
         return sb.toString();
     }