diff --git a/examples/rmqttraft-warp-memstore/src/main.rs b/examples/rmqttraft-warp-memstore/src/main.rs
index 076d280..3aa45b0 100644
--- a/examples/rmqttraft-warp-memstore/src/main.rs
+++ b/examples/rmqttraft-warp-memstore/src/main.rs
@@ -184,6 +184,7 @@ async fn main() -> std::result::Result<(), Box<dyn std::error::Error>> {
     let cfg = Config {
         reuseaddr: true,
         reuseport: true,
+        // grpc_message_size: 50 * 1024 * 1024,
         ..Default::default()
     };
     let raft = Raft::new(options.raft_laddr, store.clone(), logger.clone(), cfg)?;
diff --git a/src/lib.rs b/src/lib.rs
index 3c3e3b7..6051d84 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -24,6 +24,7 @@ pub struct Config {
     pub reuseport: bool,
     pub grpc_timeout: Duration,
     pub grpc_concurrency_limit: usize,
+    pub grpc_message_size: usize,
     //GRPC failed to fuse threshold
     pub grpc_breaker_threshold: u64,
     pub grpc_breaker_retry_interval: Duration,
@@ -48,6 +49,7 @@ impl Default for Config {
             reuseport: false,
             grpc_timeout: Duration::from_secs(6),
             grpc_concurrency_limit: 200,
+            grpc_message_size: 50 * 1024 * 1024,
             grpc_breaker_threshold: 4,
             grpc_breaker_retry_interval: Duration::from_millis(2500),
             proposal_batch_size: 50,
diff --git a/src/raft.rs b/src/raft.rs
index 65b72b1..9216fc2 100644
--- a/src/raft.rs
+++ b/src/raft.rs
@@ -58,6 +58,7 @@ pub struct Mailbox {
     sender: mpsc::Sender<Message>,
     grpc_timeout: Duration,
     grpc_concurrency_limit: usize,
+    grpc_message_size: usize,
     grpc_breaker_threshold: u64,
     grpc_breaker_retry_interval: i64,
 }
@@ -83,6 +84,7 @@ impl Mailbox {
                     leader_addr,
                     self.grpc_timeout,
                     self.grpc_concurrency_limit,
+                    self.grpc_message_size,
                     self.grpc_breaker_threshold,
                     self.grpc_breaker_retry_interval,
                 )
@@ -276,6 +278,7 @@ impl<S: Store + Send + Sync + 'static> Raft<S> {
             sender: self.tx.clone(),
             grpc_timeout: self.cfg.grpc_timeout,
             grpc_concurrency_limit: self.cfg.grpc_concurrency_limit,
+            grpc_message_size: self.cfg.grpc_message_size,
             grpc_breaker_threshold: self.cfg.grpc_breaker_threshold,
             grpc_breaker_retry_interval: self.cfg.grpc_breaker_retry_interval.as_millis() as i64,
         }
@@ -310,7 +313,13 @@ impl<S: Store + Send + Sync + 'static> Raft<S> {
 
     async fn request_leader(&self, peer_addr: String) -> Result<Option<(u64, String)>> {
         let (leader_id, leader_addr): (u64, String) = {
-            let mut client = connect(&peer_addr, 1, self.cfg.grpc_timeout).await?;
+            let mut client = connect(
+                &peer_addr,
+                1,
+                self.cfg.grpc_message_size,
+                self.cfg.grpc_timeout,
+            )
+            .await?;
             let response = client
                 .request_id(Request::new(Empty::default()))
                 .await?
diff --git a/src/raft_node.rs b/src/raft_node.rs
index d07a484..67b96ff 100644
--- a/src/raft_node.rs
+++ b/src/raft_node.rs
@@ -150,6 +150,7 @@ pub struct Peer {
     grpc_fail_time: Arc<AtomicI64>,
     crw_timeout: Duration,
     concurrency_limit: usize,
+    grpc_message_size: usize,
     grpc_breaker_threshold: u64,
     grpc_breaker_retry_interval: i64,
     active_tasks: Arc<AtomicI64>,
@@ -160,6 +161,7 @@ impl Peer {
         addr: String,
         crw_timeout: Duration,
         concurrency_limit: usize,
+        grpc_message_size: usize,
         grpc_breaker_threshold: u64,
         grpc_breaker_retry_interval: i64,
     ) -> Peer {
@@ -171,6 +173,7 @@ impl Peer {
             grpc_fail_time: Arc::new(AtomicI64::new(0)),
             crw_timeout,
             concurrency_limit,
+            grpc_message_size,
             grpc_breaker_threshold,
             grpc_breaker_retry_interval,
             active_tasks: Arc::new(AtomicI64::new(0)),
@@ -198,7 +201,13 @@ impl Peer {
             return Ok(c.clone());
         }
 
-        let c = connect(&self.addr, self.concurrency_limit, self.crw_timeout).await?;
+        let c = connect(
+            &self.addr,
+            self.concurrency_limit,
+            self.grpc_message_size,
+            self.crw_timeout,
+        )
+        .await?;
         client.replace(c.clone());
         Ok(c)
     }
@@ -442,6 +451,7 @@ impl<S: Store + 'static> RaftNode<S> {
             addr.to_string(),
             self.cfg.grpc_timeout,
             self.cfg.grpc_concurrency_limit,
+            self.cfg.grpc_message_size,
             self.cfg.grpc_breaker_threshold,
             self.cfg.grpc_breaker_retry_interval.as_millis() as i64,
         );
diff --git a/src/raft_server.rs b/src/raft_server.rs
index ebdaad0..d30a316 100644
--- a/src/raft_server.rs
+++ b/src/raft_server.rs
@@ -40,7 +40,9 @@ impl RaftServer {
         let laddr = self.laddr;
         let _cfg = self.cfg.clone();
         info!("listening gRPC requests on: {}", laddr);
-        let svc = RaftServiceServer::new(self);
+        let svc = RaftServiceServer::new(self)
+            .max_decoding_message_size(_cfg.grpc_message_size)
+            .max_encoding_message_size(_cfg.grpc_message_size);
         let server = Server::builder().add_service(svc);
 
         #[cfg(any(feature = "reuseport", feature = "reuseaddr"))]
diff --git a/src/raft_service.rs b/src/raft_service.rs
index f8a8e7e..1e96e3c 100644
--- a/src/raft_service.rs
+++ b/src/raft_service.rs
@@ -31,13 +31,16 @@ pub(crate) fn endpoint(
 pub(crate) async fn connect(
     saddr: &str,
     concurrency_limit: usize,
+    message_size: usize,
     timeout: Duration,
 ) -> Result<RaftServiceClientType> {
     Ok(RaftServiceClientType::new(
         endpoint(saddr, concurrency_limit, timeout)?
             .connect()
             .await?,
-    ))
+    )
+    .max_decoding_message_size(message_size)
+    .max_encoding_message_size(message_size))
 }
 
 #[inline]
@@ -63,4 +66,4 @@ pub fn bind(
         tokio::net::TcpListener::from_std(std::net::TcpListener::from(builder))?,
     );
     Ok(listener)
-}
\ No newline at end of file
+}