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 8ecae8d..710593b 100644
--- a/app/src/main/java/com/github/catvod/ali/API.java
+++ b/app/src/main/java/com/github/catvod/ali/API.java
@@ -279,6 +279,7 @@ public class API {
         List<Item> files = new ArrayList<>();
         List<Item> subs = new ArrayList<>();
         listFiles(new Item(getParentFileId(fileId, object)), files, subs);
+        Collections.sort(files);
         List<String> playFrom = Arrays.asList("原畫", "普畫");
         List<String> episode = new ArrayList<>();
         List<String> playUrl = new ArrayList<>();
diff --git a/app/src/main/java/com/github/catvod/bean/ali/Item.java b/app/src/main/java/com/github/catvod/bean/ali/Item.java
index fef4f30..0026a3d 100644
--- a/app/src/main/java/com/github/catvod/bean/ali/Item.java
+++ b/app/src/main/java/com/github/catvod/bean/ali/Item.java
@@ -10,7 +10,7 @@ import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 
-public class Item {
+public class Item implements Comparable<Item> {
 
     @SerializedName("items")
     private List<Item> items;
@@ -85,4 +85,9 @@ public class Item {
     public String getDisplayName() {
         return TextUtils.join(" ", Arrays.asList(getParent(), getName(), getSize())).trim();
     }
+    
+    @Override
+    public int compareTo(Item item) {
+        return this.getName().compareTo(item.getName());
+    }
 }