diff --git a/cpp/conf/server_config.yaml b/cpp/conf/server_config.yaml
index a94d56d5ac59e971a41c099fc4def8513141c0a8..717e9b10cb22f32a87a28cd2c232ef8dc07bc5af 100644
--- a/cpp/conf/server_config.yaml
+++ b/cpp/conf/server_config.yaml
@@ -1,10 +1,10 @@
 server_config:
   address: 0.0.0.0
-  port: 33001
+  port: 19530
   transfer_protocol: binary   #optional: binary, compact, json
   server_mode: thread_pool    #optional: simple, thread_pool
   gpu_index: 0                #which gpu to be used
-  mode: single                 #optional: single, cluster
+  mode: single                #optional: single, cluster
 
 db_config:
   db_path: /tmp/milvus
diff --git a/cpp/src/sdk/examples/simple/main.cpp b/cpp/src/sdk/examples/simple/main.cpp
index 722d40de4fdccb1e959e33526a09d292020abf40..499b8a9935843f5435d7834b163334717af80682 100644
--- a/cpp/src/sdk/examples/simple/main.cpp
+++ b/cpp/src/sdk/examples/simple/main.cpp
@@ -25,7 +25,7 @@ main(int argc, char *argv[]) {
                                            {NULL, 0, 0, 0}};
 
     int option_index = 0;
-    std::string address = "127.0.0.1", port = "33001";
+    std::string address = "127.0.0.1", port = "19530";
     app_name = argv[0];
 
     int value;
@@ -62,7 +62,7 @@ print_help(const std::string &app_name) {
     printf("\n Usage: %s [OPTIONS]\n\n", app_name.c_str());
     printf("  Options:\n");
     printf("   -s --server   Server address, default 127.0.0.1\n");
-    printf("   -p --port     Server port, default 33001\n");
+    printf("   -p --port     Server port, default 19530\n");
     printf("   -h --help     Print help information\n");
     printf("\n");
 }
\ No newline at end of file
diff --git a/cpp/src/server/MilvusServer.cpp b/cpp/src/server/MilvusServer.cpp
index f738c46711e010e9b2c389354747b97c29ec00b8..5e42eb3d7a7fc021475d9d794ac900a7d188b045 100644
--- a/cpp/src/server/MilvusServer.cpp
+++ b/cpp/src/server/MilvusServer.cpp
@@ -47,7 +47,7 @@ MilvusServer::StartService() {
     ConfigNode server_config = config.GetConfig(CONFIG_SERVER);
 
     std::string address = server_config.GetValue(CONFIG_SERVER_ADDRESS, "127.0.0.1");
-    int32_t port = server_config.GetInt32Value(CONFIG_SERVER_PORT, 33001);
+    int32_t port = server_config.GetInt32Value(CONFIG_SERVER_PORT, 19530);
     std::string protocol = server_config.GetValue(CONFIG_SERVER_PROTOCOL, "binary");
     std::string mode = server_config.GetValue(CONFIG_SERVER_MODE, "thread_pool");