diff --git a/build.gradle b/build.gradle
index c92a1c7..b82f0f1 100644
--- a/build.gradle
+++ b/build.gradle
@@ -18,6 +18,8 @@
     implementation 'org.springframework.boot:spring-boot-starter-web'
     providedRuntime 'org.springframework.boot:spring-boot-starter-tomcat'
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
+
+    implementation 'org.springframework.boot:spring-boot-starter-websocket'
 }
 
 tasks.named('test') {
diff --git a/src/main/java/com/ntlab/irisserver/WebSocketConfig.java b/src/main/java/com/ntlab/irisserver/WebSocketConfig.java
new file mode 100644
index 0000000..b4ad29e
--- /dev/null
+++ b/src/main/java/com/ntlab/irisserver/WebSocketConfig.java
@@ -0,0 +1,27 @@
+package com.ntlab.irisserver;
+import com.ntlab.irisserver.resources.HelloWorldWebSocket;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.socket.config.annotation.*;
+import org.springframework.web.socket.server.standard.ServerEndpointExporter;
+
+@Configuration
+@EnableWebSocket
+public class WebSocketConfig implements WebSocketConfigurer {
+
+    @Override
+    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
+        //registry.addHandler(unitWebSocketHandler, "/unit").setAllowedOrigins("*");
+    }
+
+    @Bean
+    public HelloWorldWebSocket helloWorldWebSocket() {
+        return new HelloWorldWebSocket();
+    }
+
+    @Bean
+    public ServerEndpointExporter serverEndpointExporter() {
+        return new ServerEndpointExporter();
+    }
+
+}
diff --git a/src/main/java/com/ntlab/irisserver/resources/HelloWorld.java b/src/main/java/com/ntlab/irisserver/resources/HelloWorld.java
index de0e2ed..d38541e 100644
--- a/src/main/java/com/ntlab/irisserver/resources/HelloWorld.java
+++ b/src/main/java/com/ntlab/irisserver/resources/HelloWorld.java
@@ -12,7 +12,7 @@
 public class HelloWorld {
     @GET
     public String getHello() {
-        return "Hello World！（WebSocketバージョン）。12/11-10:48";
+        return "WebSocketのデモの追加。12/11-10:54";
     }
 
 }
diff --git a/src/main/java/com/ntlab/irisserver/resources/HelloWorldWebSocket.java b/src/main/java/com/ntlab/irisserver/resources/HelloWorldWebSocket.java
new file mode 100644
index 0000000..92a70ef
--- /dev/null
+++ b/src/main/java/com/ntlab/irisserver/resources/HelloWorldWebSocket.java
@@ -0,0 +1,56 @@
+package com.ntlab.irisserver.resources;
+
+import javax.websocket.*;
+import javax.websocket.server.ServerEndpoint;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Queue;
+import java.util.concurrent.ConcurrentLinkedQueue;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+
+
+// ５秒に１回HelloWorldを送るデモ
+@ServerEndpoint("/HelloWorldWebSocket")
+public class HelloWorldWebSocket {
+    private static final Queue<Session> sessions = new ConcurrentLinkedQueue<>();
+
+    static {
+        ScheduledExecutorService service = Executors.newSingleThreadScheduledExecutor();
+        service.scheduleWithFixedDelay(HelloWorldWebSocket::broadcast, 5, 5, TimeUnit.SECONDS);
+    }
+
+    @OnMessage
+    public String onMessage(String message) {
+        System.out.println("WebSocketで受信したメッセージ/ " + message);
+        return "WebSocketでメッセージを正常に受信しました！";
+    }
+
+    @OnError
+    public void onError(Throwable th) {
+        System.out.println("WebSocketエラーが発生/ " + th.getMessage());
+    }
+
+    @OnOpen
+    public void onOpen(Session session) {
+        System.out.println("WebSocketセッション確立");
+        sessions.add(session);
+    }
+
+    @OnClose
+    public void onClose(Session session) {
+        System.out.println("WebSocketセッション終了");
+        sessions.remove(session);
+    }
+
+    public static void broadcast() {
+        Date now = new Date();
+        SimpleDateFormat formatter = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
+
+        sessions.forEach(session -> {
+            session.getAsyncRemote().sendText("HelloWorld！ : " + formatter.format(now));
+        });
+    }
+
+}
\ No newline at end of file