diff --git a/basic-interface/src/main/java/ink/wgink/interfaces/manager/IWebSocketUserSessionManager.java b/basic-interface/src/main/java/ink/wgink/interfaces/manager/IWebSocketUserSessionManager.java
index 8eb125b7..f1361068 100644
--- a/basic-interface/src/main/java/ink/wgink/interfaces/manager/IWebSocketUserSessionManager.java
+++ b/basic-interface/src/main/java/ink/wgink/interfaces/manager/IWebSocketUserSessionManager.java
@@ -59,7 +59,7 @@ public interface IWebSocketUserSessionManager {
      * @param clientName 客户端名称
      * @return
      */
-    WebSocketSession getOnlineUser(String userId, String clientName);
+    List<WebSocketSession> listOnlineUser(String userId, String clientName);
 
     /**
      * 在线会话列表
diff --git a/basic-pojo/src/main/java/ink/wgink/pojo/session/WebSocketSession.java b/basic-pojo/src/main/java/ink/wgink/pojo/session/WebSocketSession.java
index 348162c7..84b92783 100644
--- a/basic-pojo/src/main/java/ink/wgink/pojo/session/WebSocketSession.java
+++ b/basic-pojo/src/main/java/ink/wgink/pojo/session/WebSocketSession.java
@@ -85,4 +85,23 @@ public class WebSocketSession implements Serializable {
     public void setUpdateTime(Long updateTime) {
         this.updateTime = updateTime;
     }
+
+    @Override
+    public String toString() {
+        final StringBuilder sb = new StringBuilder("{");
+        sb.append("\"sessionId\":\"")
+                .append(sessionId).append('\"');
+        sb.append(",\"userId\":\"")
+                .append(userId).append('\"');
+        sb.append(",\"clientName\":\"")
+                .append(clientName).append('\"');
+        sb.append(",\"channelId\":\"")
+                .append(channelId).append('\"');
+        sb.append(",\"channel\":")
+                .append(channel);
+        sb.append(",\"updateTime\":")
+                .append(updateTime);
+        sb.append('}');
+        return sb.toString();
+    }
 }
diff --git a/module-instant-message/src/main/java/ink/wgink/module/instantmessage/controller/app/WebSocketClientAppController.java b/module-instant-message/src/main/java/ink/wgink/module/instantmessage/controller/app/WebSocketClientAppController.java
index f8fb23ac..de64fc73 100644
--- a/module-instant-message/src/main/java/ink/wgink/module/instantmessage/controller/app/WebSocketClientAppController.java
+++ b/module-instant-message/src/main/java/ink/wgink/module/instantmessage/controller/app/WebSocketClientAppController.java
@@ -30,6 +30,7 @@ public class WebSocketClientAppController {
     @ApiResponses({@ApiResponse(code = 400, message = "请求失败", response = ErrorResult.class)})
     @GetMapping("login/{clientName}")
     public SuccessResultData<String> login(@RequestHeader("token") String token, @PathVariable("clientName") String clientName) {
+        System.out.println(">>>> token：" + token);
         String sessionId = webSocketClientService.login(token, clientName);
         return new SuccessResultData<>(sessionId);
     }
diff --git a/module-instant-message/src/main/java/ink/wgink/module/instantmessage/service/impl/WebSocketClientServiceImpl.java b/module-instant-message/src/main/java/ink/wgink/module/instantmessage/service/impl/WebSocketClientServiceImpl.java
index deed8423..cc0cc688 100644
--- a/module-instant-message/src/main/java/ink/wgink/module/instantmessage/service/impl/WebSocketClientServiceImpl.java
+++ b/module-instant-message/src/main/java/ink/wgink/module/instantmessage/service/impl/WebSocketClientServiceImpl.java
@@ -36,8 +36,11 @@ public class WebSocketClientServiceImpl extends DefaultBaseService implements IW
      * @param clientName 客户端名称
      * @return
      */
-    private String initSession(String userId, String clientName) {
+    private synchronized String initSession(String userId, String clientName) {
         String sessionId = UUIDUtil.getUUID();
+        // 通知下线
+        WebSocketChannelManager.getInstance().logout(userId, clientName);
+        System.out.println(">>>>>>>> sessionId: " + sessionId);
         WebSocketChannelManager.getInstance().init(userId, sessionId, clientName);
         return sessionId;
     }
diff --git a/module-instant-message/src/main/java/ink/wgink/module/instantmessage/websocket/enums/MessageTypeEnum.java b/module-instant-message/src/main/java/ink/wgink/module/instantmessage/websocket/enums/MessageTypeEnum.java
index ec478ec9..c0458f65 100644
--- a/module-instant-message/src/main/java/ink/wgink/module/instantmessage/websocket/enums/MessageTypeEnum.java
+++ b/module-instant-message/src/main/java/ink/wgink/module/instantmessage/websocket/enums/MessageTypeEnum.java
@@ -13,6 +13,7 @@ package ink.wgink.module.instantmessage.websocket.enums;
 public enum MessageTypeEnum {
 
     REGISTER(1000, "注册消息，body 为 RegisterBody 的 JSON 字符串"),
+    LOGOUT(1001, "注销"),
 
     MESSAGE(2001, "文本消息"),
     MESSAGE_HREF(2002, "链接消息"),
diff --git a/module-instant-message/src/main/java/ink/wgink/module/instantmessage/websocket/manager/DefaultWebSocketUserSessionManager.java b/module-instant-message/src/main/java/ink/wgink/module/instantmessage/websocket/manager/DefaultWebSocketUserSessionManager.java
index c071e2b5..304dfe49 100644
--- a/module-instant-message/src/main/java/ink/wgink/module/instantmessage/websocket/manager/DefaultWebSocketUserSessionManager.java
+++ b/module-instant-message/src/main/java/ink/wgink/module/instantmessage/websocket/manager/DefaultWebSocketUserSessionManager.java
@@ -27,19 +27,14 @@ public class DefaultWebSocketUserSessionManager implements IWebSocketUserSession
 
     @Override
     public void init(String userId, String sessionId, String clientName) {
-        WebSocketSession onlineUser = getOnlineUser(userId, clientName);
-        if (onlineUser == null) {
-            onlineUser = new WebSocketSession();
-            onlineUser.setUserId(userId);
-            onlineUser.setClientName(clientName);
-            // 更新到session队列中
-            List<WebSocketSession> webSocketSessions = listOnlineUser(userId);
-            webSocketSessions.add(onlineUser);
-            webSocketUserMap.put(userId, webSocketSessions);
-        }
-        // 更新最后时间
+        WebSocketSession onlineUser = new WebSocketSession();
+        onlineUser.setUserId(userId);
+        onlineUser.setClientName(clientName);
         onlineUser.setSessionId(sessionId);
         onlineUser.setUpdateTime(System.currentTimeMillis());
+        List<WebSocketSession> webSocketSessions = listOnlineUser(userId);
+        webSocketSessions.add(onlineUser);
+        webSocketUserMap.put(userId, webSocketSessions);
     }
 
     @Override
@@ -85,20 +80,21 @@ public class DefaultWebSocketUserSessionManager implements IWebSocketUserSession
     }
 
     @Override
-    public WebSocketSession getOnlineUser(String userId, String clientName) {
+    public List<WebSocketSession> listOnlineUser(String userId, String clientName) {
         if (StringUtils.isBlank(userId) || StringUtils.isBlank(clientName)) {
-            return null;
+            return new ArrayList<>();
         }
         List<WebSocketSession> webSocketSessions = listOnlineUser(userId);
         if (webSocketSessions.isEmpty()) {
-            return null;
+            return webSocketSessions;
         }
+        List<WebSocketSession> clientNameWebSocketSessions = new ArrayList<>();
         for (WebSocketSession webSocketSession : webSocketSessions) {
             if (StringUtils.equals(clientName, webSocketSession.getClientName())) {
-                return webSocketSession;
+                clientNameWebSocketSessions.add(webSocketSession);
             }
         }
-        return null;
+        return clientNameWebSocketSessions;
     }
 
     @Override
diff --git a/module-instant-message/src/main/java/ink/wgink/module/instantmessage/websocket/manager/WebSocketChannelManager.java b/module-instant-message/src/main/java/ink/wgink/module/instantmessage/websocket/manager/WebSocketChannelManager.java
index 4bc64129..a6ca4ff6 100644
--- a/module-instant-message/src/main/java/ink/wgink/module/instantmessage/websocket/manager/WebSocketChannelManager.java
+++ b/module-instant-message/src/main/java/ink/wgink/module/instantmessage/websocket/manager/WebSocketChannelManager.java
@@ -4,6 +4,7 @@ import com.alibaba.fastjson.JSONObject;
 import ink.wgink.exceptions.websocket.SessionException;
 import ink.wgink.interfaces.manager.IWebSocketChannelManager;
 import ink.wgink.interfaces.manager.IWebSocketUserSessionManager;
+import ink.wgink.module.instantmessage.websocket.enums.MessageTypeEnum;
 import ink.wgink.module.instantmessage.websocket.pojo.WebSocketClientMessage;
 import ink.wgink.pojo.session.WebSocketSession;
 import ink.wgink.properties.websocket.WebSocketProperties;
@@ -49,6 +50,27 @@ public class WebSocketChannelManager implements IWebSocketChannelManager {
         webSocketUserSessionManager.init(userId, sessionId, clientName);
     }
 
+    /**
+     * 登出
+     *
+     * @param userId
+     * @param clientName
+     */
+    public void logout(String userId, String clientName) {
+        List<WebSocketSession> webSocketSessions = webSocketUserSessionManager.listOnlineUser(userId, clientName);
+        if (webSocketSessions.isEmpty()) {
+            return;
+        }
+        WebSocketClientMessage webSocketClientMessage = new WebSocketClientMessage();
+        webSocketClientMessage.setSystem(true);
+        webSocketClientMessage.setType(MessageTypeEnum.LOGOUT.getValue());
+        webSocketClientMessage.setFrom(WebSocketChannelManager.FORM_SYSTEM);
+        webSocketClientMessage.setTo(userId);
+        webSocketSessions.forEach(webSocketSession -> {
+            sendText(webSocketSession.getChannel(), webSocketClientMessage);
+        });
+    }
+
     /**
      * 添加通道，绑定通道与会话
      *
@@ -91,8 +113,8 @@ public class WebSocketChannelManager implements IWebSocketChannelManager {
      * @param clientName 客户端名称
      * @return
      */
-    public WebSocketSession getOnlineUser(String userId, String clientName) {
-        return webSocketUserSessionManager.getOnlineUser(userId, clientName);
+    public List<WebSocketSession> listOnlineUser(String userId, String clientName) {
+        return webSocketUserSessionManager.listOnlineUser(userId, clientName);
     }
 
     /**