diff --git a/examples/greeter/Cargo.toml b/examples/greeter/Cargo.toml
index 4e56f4e4..39077b8c 100644
--- a/examples/greeter/Cargo.toml
+++ b/examples/greeter/Cargo.toml
@@ -33,6 +33,7 @@ tracing-subscriber = "0.2.0"
 dubbo = {path = "../../dubbo", version = "0.3.0" }
 dubbo-config = {path = "../../config", version = "0.3.0" }
 dubbo-registry-zookeeper = {path = "../../registry-zookeeper", version = "0.3.0" }
+dubbo-registry-nacos = {path = "../../registry-nacos", version = "0.3.0" }
 
 [build-dependencies]
 dubbo-build = {path = "../../dubbo-build", version = "0.3.0" }
diff --git a/examples/greeter/src/greeter/client.rs b/examples/greeter/src/greeter/client.rs
index d6208434..855f9e6f 100644
--- a/examples/greeter/src/greeter/client.rs
+++ b/examples/greeter/src/greeter/client.rs
@@ -20,7 +20,10 @@ pub mod protos {
     include!(concat!(env!("OUT_DIR"), "/org.apache.dubbo.sample.tri.rs"));
 }
 
-use dubbo::codegen::*;
+use std::env;
+
+use dubbo::{codegen::*, common::url::Url};
+use dubbo_registry_nacos::nacos_registry::NacosRegistry;
 use dubbo_registry_zookeeper::zookeeper_registry::ZookeeperRegistry;
 use futures_util::StreamExt;
 use protos::{greeter_client::GreeterClient, GreeterRequest};
@@ -39,21 +42,24 @@ async fn main() {
 
     tracing::subscriber::set_global_default(subscriber).expect("setting default subscriber failed");
 
-    // let mut cli = GreeterClient::new(ClientBuilder::from_static(&"http://127.0.0.1:8888"));
+    let mut builder = ClientBuilder::new();
+
+    if let Ok(zk_servers) = env::var("ZOOKEEPER_SERVERS") {
+        let zkr = ZookeeperRegistry::new(&zk_servers);
+        let directory = RegistryDirectory::new(Box::new(zkr));
+        builder = builder.with_directory(Box::new(directory));
+    } else if let Ok(nacos_url_str) = env::var("NACOS_URL") {
+        // NACOS_URL=nacos://mse-96efa264-p.nacos-ans.mse.aliyuncs.com
+        let nacos_url = Url::from_url(&nacos_url_str).unwrap();
+        let registry = NacosRegistry::new(nacos_url);
+        let directory = RegistryDirectory::new(Box::new(registry));
+        builder = builder.with_directory(Box::new(directory));
+    } else {
+        builder = builder.with_host("http://127.0.0.1:8888");
+    }
 
-    // Here is example for zk
-    // let zk_connect_string = match env::var("ZOOKEEPER_SERVERS") {
-    //     Ok(val) => val,
-    //     Err(_) => "localhost:2181".to_string(),
-    // };
-    // let zkr = ZookeeperRegistry::new(&zk_connect_string);
-    // let directory = RegistryDirectory::new(Box::new(zkr));
-    // cli = cli.with_directory(Box::new(directory));
+    let mut cli = GreeterClient::new(builder);
 
-    let zkr = ZookeeperRegistry::default();
-    let directory = RegistryDirectory::new(Box::new(zkr));
-    let mut cli = GreeterClient::new(ClientBuilder::new().with_registry_directory(directory));
-    // using loop for loadbalance test
     println!("# unary call");
     let resp = cli
         .greet(Request::new(GreeterRequest {
diff --git a/registry-nacos/src/nacos_registry.rs b/registry-nacos/src/nacos_registry.rs
index 888382f0..360febad 100644
--- a/registry-nacos/src/nacos_registry.rs
+++ b/registry-nacos/src/nacos_registry.rs
@@ -60,7 +60,7 @@ const INNERCLASS_SYMBOL: &str = "$";
 const INNERCLASS_COMPATIBLE_SYMBOL: &str = "___";
 
 pub struct NacosRegistry {
-    nacos_naming_service: Arc<dyn NamingService>,
+    nacos_naming_service: Arc<dyn NamingService + Sync + Send + 'static>,
     listeners: Mutex<HashMap<String, HashSet<Arc<NotifyListenerWrapper>>>>,
 }