diff --git a/common/buf/multi_buffer.go b/common/buf/multi_buffer.go
index 50d642fcb..23e7b884f 100644
--- a/common/buf/multi_buffer.go
+++ b/common/buf/multi_buffer.go
@@ -10,7 +10,7 @@ import (
 
 // ReadAllToMultiBuffer reads all content from the reader into a MultiBuffer, until EOF.
 func ReadAllToMultiBuffer(reader io.Reader) (MultiBuffer, error) {
-	mb := NewMultiBufferCap(128)
+	mb := make(MultiBuffer, 0, 128)
 
 	if _, err := mb.ReadFrom(reader); err != nil {
 		mb.Release()
@@ -38,11 +38,6 @@ func ReadAllToBytes(reader io.Reader) ([]byte, error) {
 // MultiBuffer is a list of Buffers. The order of Buffer matters.
 type MultiBuffer []*Buffer
 
-// NewMultiBufferCap creates a new MultiBuffer instance.
-func NewMultiBufferCap(capacity int32) MultiBuffer {
-	return MultiBuffer(make([]*Buffer, 0, capacity))
-}
-
 // Append appends buffer to the end of this MultiBuffer
 func (mb *MultiBuffer) Append(buf *Buffer) {
 	if buf != nil {
@@ -159,13 +154,13 @@ func (mb *MultiBuffer) WriteMultiBuffer(b MultiBuffer) error {
 }
 
 // Len returns the total number of bytes in the MultiBuffer.
-func (mb *MultiBuffer) Len() int32 {
+func (mb MultiBuffer) Len() int32 {
 	if mb == nil {
 		return 0
 	}
 
 	size := int32(0)
-	for _, b := range *mb {
+	for _, b := range mb {
 		size += b.Len()
 	}
 	return size
@@ -200,7 +195,7 @@ func (mb MultiBuffer) String() string {
 
 // SliceBySize splits the beginning of this MultiBuffer into another one, for at most size bytes.
 func (mb *MultiBuffer) SliceBySize(size int32) MultiBuffer {
-	slice := NewMultiBufferCap(10)
+	slice := make(MultiBuffer, 0, 10)
 	sliceSize := int32(0)
 	endIndex := len(*mb)
 	for i, b := range *mb {
diff --git a/common/buf/reader.go b/common/buf/reader.go
index 409c77a68..fb1dd4883 100644
--- a/common/buf/reader.go
+++ b/common/buf/reader.go
@@ -139,5 +139,5 @@ func (r *SingleReader) ReadMultiBuffer() (MultiBuffer, error) {
 	if err != nil {
 		return nil, err
 	}
-	return NewMultiBufferValue(b), nil
+	return MultiBuffer{b}, nil
 }
diff --git a/common/crypto/auth.go b/common/crypto/auth.go
index f23c770a8..5236827e0 100644
--- a/common/crypto/auth.go
+++ b/common/crypto/auth.go
@@ -200,7 +200,7 @@ func (r *AuthenticationReader) readInternal(soft bool, mb *buf.MultiBuffer) erro
 
 func (r *AuthenticationReader) ReadMultiBuffer() (buf.MultiBuffer, error) {
 	const readSize = 16
-	mb := buf.NewMultiBufferCap(readSize)
+	mb := make(buf.MultiBuffer, 0, readSize)
 	if err := r.readInternal(false, &mb); err != nil {
 		mb.Release()
 		return nil, err
@@ -277,7 +277,7 @@ func (w *AuthenticationWriter) writeStream(mb buf.MultiBuffer) error {
 	}
 
 	payloadSize := buf.Size - int32(w.auth.Overhead()) - w.sizeParser.SizeBytes() - maxPadding
-	mb2Write := buf.NewMultiBufferCap(int32(len(mb) + 10))
+	mb2Write := make(buf.MultiBuffer, 0, len(mb)+10)
 
 	for {
 		b := buf.New()
@@ -301,7 +301,7 @@ func (w *AuthenticationWriter) writeStream(mb buf.MultiBuffer) error {
 func (w *AuthenticationWriter) writePacket(mb buf.MultiBuffer) error {
 	defer mb.Release()
 
-	mb2Write := buf.NewMultiBufferCap(int32(len(mb)) + 1)
+	mb2Write := make(buf.MultiBuffer, 0, len(mb)+1)
 
 	for _, b := range mb {
 		if b.IsEmpty() {
diff --git a/common/crypto/chunk.go b/common/crypto/chunk.go
index 5bea4b8f2..465c21c10 100755
--- a/common/crypto/chunk.go
+++ b/common/crypto/chunk.go
@@ -140,7 +140,7 @@ func NewChunkStreamWriter(sizeEncoder ChunkSizeEncoder, writer io.Writer) *Chunk
 func (w *ChunkStreamWriter) WriteMultiBuffer(mb buf.MultiBuffer) error {
 	const sliceSize = 8192
 	mbLen := mb.Len()
-	mb2Write := buf.NewMultiBufferCap(mbLen/buf.Size + mbLen/sliceSize + 2)
+	mb2Write := make(buf.MultiBuffer, 0, mbLen/buf.Size+mbLen/sliceSize+2)
 
 	for {
 		slice := mb.SliceBySize(sliceSize)
diff --git a/common/mux/writer.go b/common/mux/writer.go
index 58643931e..72536739c 100644
--- a/common/mux/writer.go
+++ b/common/mux/writer.go
@@ -70,7 +70,7 @@ func writeMetaWithFrame(writer buf.Writer, meta FrameMetadata, data buf.MultiBuf
 		return err
 	}
 
-	mb2 := buf.NewMultiBufferCap(int32(len(data)) + 1)
+	mb2 := make(buf.MultiBuffer, 0, len(data)+1)
 	mb2.Append(frame)
 	mb2.AppendMulti(data)
 	return writer.WriteMultiBuffer(mb2)
diff --git a/common/net/connection.go b/common/net/connection.go
index f18402417..c1341bd86 100644
--- a/common/net/connection.go
+++ b/common/net/connection.go
@@ -99,7 +99,7 @@ func (c *connection) Write(b []byte) (int, error) {
 	}
 
 	l := len(b)
-	mb := buf.NewMultiBufferCap(int32(l)/buf.Size + 1)
+	mb := make(buf.MultiBuffer, 0, l/buf.Size+1)
 	common.Must2(mb.Write(b))
 	return l, c.writer.WriteMultiBuffer(mb)
 }
diff --git a/transport/internet/kcp/receiving.go b/transport/internet/kcp/receiving.go
index 5482d45ac..000cf197a 100644
--- a/transport/internet/kcp/receiving.go
+++ b/transport/internet/kcp/receiving.go
@@ -186,7 +186,7 @@ func (w *ReceivingWorker) ReadMultiBuffer() buf.MultiBuffer {
 		return mb
 	}
 
-	mb := buf.NewMultiBufferCap(32)
+	mb := make(buf.MultiBuffer, 0, 32)
 
 	w.Lock()
 	defer w.Unlock()