diff --git a/BInaryKit-Test/EndianTest.cs b/BInaryKit-Test/EndianTest.cs
index cc65906..36aaa4b 100644
--- a/BInaryKit-Test/EndianTest.cs
+++ b/BInaryKit-Test/EndianTest.cs
@@ -1,4 +1,5 @@
-using Iks.BinaryToolkit;
+using System.Buffers.Binary;
+using Iks.BinaryToolkit;
 using Xunit.Abstractions;
 
 namespace BinaryKit_Test;
@@ -34,5 +35,30 @@ public unsafe void Read_Struct()
         output.WriteLine("actual: " + actual);
         Assert.Equal(expected, actual);
     }
+
+    #region Multiple-Test
+
+    [Fact]
+    public void ReverseManyTest()
+    {
+        Span<int> old = [10,20,30,40,50,60,70,80];
+        Span<int> expected = stackalloc int[old.Length];
+        for (var index = 0; index < old.Length; index++)
+        {
+            var item = old[index];
+            expected[index] = BinaryPrimitives.ReverseEndianness(item);
+        }
+
+        EndianToolkit.ReverseMany(old);
+        for (int i = 0; i < old.Length; i++)
+        {
+            if (old[i] != expected[i])
+            {
+                Assert.Fail();
+            }
+        }
+    }
     
+
+    #endregion
 }
\ No newline at end of file
diff --git a/BinaryToolKit/EndianToolkit.cs b/BinaryToolKit/EndianToolkit.cs
index d6a832d..9dd5a39 100644
--- a/BinaryToolKit/EndianToolkit.cs
+++ b/BinaryToolKit/EndianToolkit.cs
@@ -10,6 +10,8 @@ namespace Iks.BinaryToolkit;
 /// </summary>
 public static class EndianToolkit
 {
+    #region Single
+
     /// <summary>
     /// reverses the endianness of an unmanaged type(value).
     /// </summary>
@@ -91,6 +93,7 @@ allows ref struct
     /// converts the endianness of an unmanaged type(value) from one to another.
     /// it cannot to make sure struct members are all in the same endian.it just reverses byte-endianness of the whole struct.
     /// </summary>
+    /// <param name="value">target value</param>
     /// <param name="from">source endian,can use local</param>
     /// <param name="to">target endian,can use local</param>
     public static void Convert<T>(scoped ref T value, Endianness from, Endianness to) where T : unmanaged
@@ -109,7 +112,9 @@ allows ref struct
         Reverse(ref value);
     }
 
-
+    #endregion
+    
+    
     #region Multiple
 
     /// <summary>
@@ -138,7 +143,8 @@ allows ref struct
         {
             throw new ArgumentException(ErrorMessage.Not_Supported_Type_With_Pointer, nameof(T));
         }
-
+        //do not reverse
+        if(sizeof(T) ==1)return;
         while (lenght-- > 0)
         {
             ReverseNoCheck(target);
@@ -146,6 +152,21 @@ allows ref struct
         }
     }
 
+    /// <summary>
+    /// converts the endianness of multiple unmanaged type(value) from one to another.
+    /// </summary>
+    /// <param name="target">target position to reverse endianness</param>
+    /// <param name="from">source endian,can use local</param>
+    /// <param name="to">target endian,can use local</param>
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static unsafe void ConvertMany<T>(Span<T> target, Endianness from, Endianness to) where T : unmanaged
+    {
+        fixed (T* ptr = &MemoryMarshal.GetReference(target))
+        {
+            ConvertMany(ptr, target.Length, from, to);
+        }
+    }
+    
     /// <summary>
     /// converts the endianness of multiple unmanaged type(value) from one to another.
     /// </summary>
@@ -153,6 +174,7 @@ allows ref struct
     /// <param name="lenght">the number of ptr field</param>
     /// <param name="from">source endian,can use local</param>
     /// <param name="to">target endian,can use local</param>
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
     public static unsafe void ConvertMany<T>(T* target, int lenght, Endianness from, Endianness to) where T : unmanaged
 #if NET9_0_OR_GREATER
         ,
@@ -160,38 +182,16 @@ public static unsafe void ConvertMany<T>(T* target, int lenght, Endianness from,
         allows ref struct
 #endif
     {
-        if (RuntimeHelpers.IsReferenceOrContainsReferences<T>())
-        {
-            throw new ArgumentException(ErrorMessage.Not_Supported_Type_With_Pointer, nameof(T));
-        }
-
         //process local
         if (from is Endianness.Local) from = BitConverter.IsLittleEndian ? Endianness.Little : Endianness.Big;
         if (to is Endianness.Local) to = BitConverter.IsLittleEndian ? Endianness.Little : Endianness.Big;
         // same,do nothing
         if (from == to) return;
         // differ, reverse
-        while (lenght-- > 0)
-        {
-            ReverseNoCheck(target);
-            target++;
-        }
+        ReverseMany(target, lenght);
     }
 
-    /// <summary>
-    /// converts the endianness of multiple unmanaged type(value) from one to another.
-    /// </summary>
-    /// <param name="target">target position to reverse endianness</param>
-    /// <param name="from">source endian,can use local</param>
-    /// <param name="to">target endian,can use local</param>
-    [MethodImpl(MethodImplOptions.AggressiveInlining)]
-    public static unsafe void ConvertMany<T>(Span<T> target, Endianness from, Endianness to) where T : unmanaged
-    {
-        fixed (T* ptr = &MemoryMarshal.GetReference(target))
-        {
-            ConvertMany(ptr, target.Length, from, to);
-        }
-    }
+    
 
     #endregion
 }