diff --git a/pkg/protocol/bthrift/binary.go b/pkg/protocol/bthrift/binary.go
index 2b5dbf3aa8..d71bac9e04 100644
--- a/pkg/protocol/bthrift/binary.go
+++ b/pkg/protocol/bthrift/binary.go
@@ -467,8 +467,7 @@ func (binaryProtocol) ReadString(buf []byte) (value string, length int, err erro
 	if size < 0 || int(size) > len(buf) {
 		return value, length, perrors.NewProtocolErrorWithType(thrift.INVALID_DATA, "[ReadString] the string size greater than buf length")
 	}
-	data := spanCache.Copy(buf[length : length+int(size)])
-	value = utils.SliceByteToString(data)
+	value = utils.SliceByteToString(buf[length : length+int(size)])
 	length += int(size)
 	return
 }
@@ -484,7 +483,7 @@ func (binaryProtocol) ReadBinary(buf []byte) (value []byte, length int, err erro
 	if size < 0 || size > len(buf) {
 		return value, length, perrors.NewProtocolErrorWithType(thrift.INVALID_DATA, "[ReadBinary] the binary size greater than buf length")
 	}
-	value = spanCache.Copy(buf[length : length+size])
+	value = buf[length : length+size]
 	length += size
 	return
 }
diff --git a/pkg/remote/codec/thrift/binary_protocol.go b/pkg/remote/codec/thrift/binary_protocol.go
index fadffbbdb5..fc901d0be0 100644
--- a/pkg/remote/codec/thrift/binary_protocol.go
+++ b/pkg/remote/codec/thrift/binary_protocol.go
@@ -509,7 +509,7 @@ func (p *BinaryProtocol) ByteBuffer() remote.ByteBuffer {
 
 // next ...
 func (p *BinaryProtocol) next(size int) ([]byte, error) {
-	buf, err := p.trans.Next(size)
+	buf, err := p.trans.ReadBinary(size)
 	if err != nil {
 		return buf, perrors.NewProtocolError(err)
 	}