diff --git a/store/tikv/client.go b/store/tikv/client.go
index 56ffbcf666a9f..e7e952d23f11e 100644
--- a/store/tikv/client.go
+++ b/store/tikv/client.go
@@ -39,10 +39,6 @@ import (
 	"google.golang.org/grpc/keepalive"
 )
 
-// MaxSendMsgSize set max gRPC request message size sent to server. If any request message size is larger than
-// current value, an error will be reported from gRPC.
-var MaxSendMsgSize = 10 * 1024 * 1024
-
 // MaxRecvMsgSize set max gRPC receive message size received from server. If any message size is larger than
 // current value, an error will be reported from gRPC.
 var MaxRecvMsgSize = math.MaxInt64
@@ -258,7 +254,6 @@ func (a *connArray) Init(addr string, security config.Security) error {
 			grpc.WithUnaryInterceptor(unaryInterceptor),
 			grpc.WithStreamInterceptor(streamInterceptor),
 			grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(MaxRecvMsgSize)),
-			grpc.WithDefaultCallOptions(grpc.MaxCallSendMsgSize(MaxSendMsgSize)),
 			grpc.WithBackoffMaxDelay(time.Second*3),
 			grpc.WithKeepaliveParams(keepalive.ClientParameters{
 				Time:                time.Duration(keepAlive) * time.Second,