diff --git a/Sanchime.Functional/Monads/FreeMonad.cs b/Sanchime.Functional/Monads/FreeMonad.cs
index 0e10705..cc8aee7 100644
--- a/Sanchime.Functional/Monads/FreeMonad.cs
+++ b/Sanchime.Functional/Monads/FreeMonad.cs
@@ -36,7 +36,7 @@ internal sealed class More<T> : Free<T>
 public static class FreeMonad
 {
     /// <summary>
-    /// 自然变幻Return， 将值导入至Free的世界
+    /// 将值转换为Free
     /// </summary>
     /// <param name="value">无状态的值</param>
     /// <typeparam name="T"></typeparam>
diff --git a/Sanchime.Functional/Products/IMatchable.cs b/Sanchime.Functional/Products/IMatchable.cs
deleted file mode 100644
index 1b430ba..0000000
--- a/Sanchime.Functional/Products/IMatchable.cs
+++ /dev/null
@@ -1,21 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-
-namespace Sanchime.Functional.Products;
-
-
-public interface IMatchable<TValue>
-{
-    TResult Match<TResult>(Func<TResult> left, Func<TValue, TResult> right);
-
-    Unit Match(Action left, Action<TValue> right);
-}
-
-public interface IMatchable
-{
-    TResult Match<TValue, TResult>(Func<TResult> left, Func<TValue, TResult> right);
-
-    Unit Match<TValue>(Action left, Action<TValue> right);
-}
\ No newline at end of file
diff --git a/Sanchime.Functional/Products/Unit.cs b/Sanchime.Functional/Products/Unit.cs
index 95915d7..8824b16 100644
--- a/Sanchime.Functional/Products/Unit.cs
+++ b/Sanchime.Functional/Products/Unit.cs
@@ -5,8 +5,7 @@ public sealed class Unit : IEquatable<Unit>
     private static readonly Unit _unique = new();
 
     public static Unit Value => _unique;
-
-    private Unit() {  }
+    
     static Unit() {  }
 
     public override int GetHashCode() => 0;