diff --git a/src/CatLib.Core.NetStandard/CatLib.Core.NetStandard.csproj b/src/CatLib.Core.NetStandard/CatLib.Core.NetStandard.csproj
index 947caa6..fe63590 100644
--- a/src/CatLib.Core.NetStandard/CatLib.Core.NetStandard.csproj
+++ b/src/CatLib.Core.NetStandard/CatLib.Core.NetStandard.csproj
@@ -106,7 +106,6 @@
     <Compile Include="..\CatLib.Core\Support\QuickList\QuickList.cs" Link="Support\QuickList\QuickList.cs" />
     <Compile Include="..\CatLib.Core\Support\RingBuffer\IRingBuffer.cs" Link="Support\RingBuffer\IRingBuffer.cs" />
     <Compile Include="..\CatLib.Core\Support\RingBuffer\RingBuffer.cs" Link="Support\RingBuffer\RingBuffer.cs" />
-    <Compile Include="..\CatLib.Core\Support\SortSet\ISortSet.cs" Link="Support\SortSet\ISortSet.cs" />
     <Compile Include="..\CatLib.Core\Support\SortSet\SortSet.cs" Link="Support\SortSet\SortSet.cs" />
     <Compile Include="..\CatLib.Core\Support\Storage\IStorage.cs" Link="Support\Storage\IStorage.cs" />
     <Compile Include="..\CatLib.Core\Support\Storage\MemoryStorage.cs" Link="Support\Storage\MemoryStorage.cs" />
diff --git a/src/CatLib.Core/CatLib.Core.csproj b/src/CatLib.Core/CatLib.Core.csproj
index 98b3c29..7f0cd79 100644
--- a/src/CatLib.Core/CatLib.Core.csproj
+++ b/src/CatLib.Core/CatLib.Core.csproj
@@ -106,7 +106,6 @@
     <Compile Include="Support\Storage\MemoryStorage.cs" />
     <Compile Include="Support\Stream\WrapperStream.cs" />
     <Compile Include="Support\Util\Dict.cs" />
-    <Compile Include="Support\SortSet\ISortSet.cs" />
     <Compile Include="Support\SortSet\SortSet.cs" />
     <Compile Include="Support\Template\IManaged.cs" />
     <Compile Include="Support\Template\IManager.cs" />
diff --git a/src/CatLib.Core/Support/SortSet/ISortSet.cs b/src/CatLib.Core/Support/SortSet/ISortSet.cs
deleted file mode 100644
index ad23f50..0000000
--- a/src/CatLib.Core/Support/SortSet/ISortSet.cs
+++ /dev/null
@@ -1,185 +0,0 @@
-/*
- * This file is part of the CatLib package.
- *
- * (c) CatLib <support@catlib.io>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- *
- * Document: https://catlib.io/
- */
-
-using System;
-using System.Collections.Generic;
-
-namespace CatLib
-{
-    /// <summary>
-    /// 有序集
-    /// </summary>
-    /// <typeparam name="TElement">元素</typeparam>
-    /// <typeparam name="TScore">分数</typeparam>
-    public interface ISortSet<TElement, TScore> : IEnumerable<TElement>
-    {
-        /// <summary>
-        /// 有序集的基数
-        /// </summary>
-        int Count { get; }
-
-        /// <summary>
-        /// 同步锁
-        /// </summary>
-        object SyncRoot { get; }
-
-        /// <summary>
-        /// 清空SortSet
-        /// </summary>
-        void Clear();
-
-        /// <summary>
-        /// 插入记录
-        /// </summary>
-        /// <param name="element">元素</param>
-        /// <param name="score">分数</param>
-        void Add(TElement element, TScore score);
-
-        /// <summary>
-        /// 是否包含某个元素
-        /// </summary>
-        /// <param name="element">元素</param>
-        bool Contains(TElement element);
-
-        /// <summary>
-        /// 返回有序集的分数
-        /// </summary>
-        /// <param name="element">元素</param>
-        /// <returns>分数，如果元素不存在则引发异常</returns>
-        /// <exception cref="KeyNotFoundException"><paramref name="element"/>不存在时引发</exception>
-        /// <exception cref="ArgumentNullException"><paramref name="element"/>为<c>null</c>时引发</exception>
-        TScore GetScore(TElement element);
-
-        /// <summary>
-        /// 获取分数范围内的元素个数
-        /// </summary>
-        /// <param name="start">起始值(包含)</param>
-        /// <param name="end">结束值(包含)</param>
-        /// <returns>分数值在<paramref name="start"/>(包含)和<paramref name="end"/>(包含)之间的元素数量</returns>
-        int GetRangeCount(TScore start, TScore end);
-
-        /// <summary>
-        /// 从有序集中删除元素，如果元素不存在返回false
-        /// </summary>
-        /// <param name="element">元素</param>
-        /// <returns>是否成功</returns>
-        bool Remove(TElement element);
-
-        /// <summary>
-        /// 根据排名区间移除区间内的元素
-        /// </summary>
-        /// <param name="startRank">开始的排名(包含),排名以0为底</param>
-        /// <param name="stopRank">结束的排名(包含),排名以0为底</param>
-        /// <returns>被删除的元素个数</returns>
-        int RemoveRangeByRank(int startRank, int stopRank);
-
-        /// <summary>
-        /// 根据分数区间移除区间内的元素
-        /// </summary>
-        /// <param name="startScore">开始的分数(包含）</param>
-        /// <param name="stopScore">结束的分数(包含）</param>
-        /// <returns>被删除的元素个数</returns>
-        int RemoveRangeByScore(TScore startScore, TScore stopScore);
-
-        /// <summary>
-        /// 获取排名 , 有序集成员按照Score从小到大排序
-        /// </summary>
-        /// <param name="element">元素</param>
-        /// <returns>排名排名以0为底，为-1则表示没有找到元素</returns>
-        int GetRank(TElement element);
-
-        /// <summary>
-        /// 获取排名，有序集成员按照Score从大到小排序
-        /// </summary>
-        /// <param name="element"></param>
-        /// <returns>排名排名以0为底 , 为-1则表示没有找到元素</returns>
-        int GetRevRank(TElement element);
-
-        /// <summary>
-        /// 根据排名区间获取区间内的所有元素
-        /// </summary>
-        /// <param name="startRank">开始的排名(包含),排名以0为底</param>
-        /// <param name="stopRank">结束的排名(包含),排名以0为底</param>
-        /// <returns>元素列表</returns>
-        TElement[] GetElementRangeByRank(int startRank, int stopRank);
-
-        /// <summary>
-        /// 根据分数区间获取区间内的所有元素
-        /// </summary>
-        /// <param name="startScore">开始的分数(包含）</param>
-        /// <param name="stopScore">结束的分数(包含）</param>
-        /// <returns>元素列表</returns>
-        TElement[] GetElementRangeByScore(TScore startScore, TScore stopScore);
-
-        /// <summary>
-        /// 根据排名获取元素 (有序集成员按照Score从小到大排序)
-        /// </summary>
-        /// <param name="rank">排名,排名以0为底</param>
-        /// <returns>元素</returns>
-        TElement GetElementByRank(int rank);
-
-        /// <summary>
-        /// 根据排名获取元素 (有序集成员按照Score从大到小排序)
-        /// </summary>
-        /// <param name="rank">排名,排名以0为底</param>
-        /// <returns>元素</returns>
-        TElement GetElementByRevRank(int rank);
-
-        /// <summary>
-        /// 反转遍历顺序(并不是反转整个有序集)
-        /// </summary>
-        void ReverseIterator();
-
-        /// <summary>
-        /// 反转遍历顺序(并不是反转整个有序集)
-        /// </summary>
-        /// <param name="forward">指定的反转顺序</param>
-        void ReverseIterator(bool forward);
-
-        /// <summary>
-        /// 获取第一个元素
-        /// </summary>
-        /// <returns>第一个元素</returns>
-        TElement First();
-
-        /// <summary>
-        /// 获取最后一个元素
-        /// </summary>
-        /// <returns>最后一个元素</returns>
-        TElement Last();
-
-        /// <summary>
-        /// 移除并返回有序集头部的元素
-        /// </summary>
-        /// <returns>元素</returns>
-        TElement Shift();
-
-        /// <summary>
-        /// 移除并返回有序集尾部的元素
-        /// </summary>
-        /// <returns>元素</returns>
-        TElement Pop();
-
-        /// <summary>
-        /// 获取指定排名的元素(有序集成员按照Score从小到大排序)
-        /// </summary>
-        /// <param name="rank">排名,排名以0为底</param>
-        /// <returns>指定的元素</returns>
-        TElement this[int rank] { get; }
-
-        /// <summary>
-        /// 转为数组
-        /// </summary>
-        /// <returns>元素数组</returns>
-        TElement[] ToArray();
-    }
-}
-
diff --git a/src/CatLib.Core/Support/SortSet/SortSet.cs b/src/CatLib.Core/Support/SortSet/SortSet.cs
index 27b7de8..ef4c8ee 100644
--- a/src/CatLib.Core/Support/SortSet/SortSet.cs
+++ b/src/CatLib.Core/Support/SortSet/SortSet.cs
@@ -20,7 +20,7 @@ namespace CatLib
     /// Ordered set
     /// </summary>
     [DebuggerDisplay("Count = {" + nameof(Count) + "}")]
-    public sealed class SortSet<TElement, TScore> : ISortSet<TElement, TScore>
+    public sealed class SortSet<TElement, TScore> : IEnumerable<TElement>
         where TScore : IComparable<TScore>
     {
         /// <summary>