diff --git a/bdchain/api/ac_chain.proto b/bdchain/api/ac_chain.proto
index af86ddd..1853c9c 100644
--- a/bdchain/api/ac_chain.proto
+++ b/bdchain/api/ac_chain.proto
@@ -2,6 +2,7 @@ syntax = "proto3";
 
 package bdchain.api;
 
+import "google/protobuf/empty.proto";
 import "bdchain/api/common.proto";
 
 option go_package = "bdchain/api/grpc/acchain";
@@ -10,6 +11,7 @@ option java_outer_classname = "AccountingChainProto";
 option java_multiple_files = true;
 
 service AccountingChain {
+    rpc ClientVersion (google.protobuf.Empty) returns (ClientVersionResponse);
     rpc BlockNumber (BlockNumberRequest) returns (BlockNumberResponse);
     rpc GetBlockByNumber (GetBlockByNumberRequest) returns (BlockResponse);
     rpc GetBlockByHash (GetBlockByHashRequest) returns (BlockResponse);
diff --git a/bdchain/api/common.proto b/bdchain/api/common.proto
index 911eef6..76dc142 100644
--- a/bdchain/api/common.proto
+++ b/bdchain/api/common.proto
@@ -13,6 +13,11 @@ message Error {
     string target = 3; // The target of the error.
 }
 
+message ClientVersionResponse {
+    Error error = 1;
+    string version = 2; // 节点客户端版本
+}
+
 /* 事务类型 */
 enum TransactionType {
     RECORD = 0; // 通用数据记录
diff --git a/bdchain/api/tx_ledger.proto b/bdchain/api/tx_ledger.proto
index 3ddcbe2..2fa63ca 100644
--- a/bdchain/api/tx_ledger.proto
+++ b/bdchain/api/tx_ledger.proto
@@ -11,6 +11,7 @@ option java_outer_classname = "TransactionLedgerProto";
 option java_multiple_files = true;
 
 service TransactionLedger {
+    rpc ClientVersion (google.protobuf.Empty) returns (ClientVersionResponse);
     rpc CreateLedger (CreateLedgerRequest) returns (CreateLedgerResponse);
     rpc GetLedgers (google.protobuf.Empty) returns (GetLedgersResponse);
     rpc SendTransaction (SendTransactionRequest) returns (SendTransactionResponse);