diff --git a/modules/core/src/main/java/com/bytedesk/core/thread/ThreadEntity.java b/modules/core/src/main/java/com/bytedesk/core/thread/ThreadEntity.java
index 6b57b55de8..924bacb2ed 100644
--- a/modules/core/src/main/java/com/bytedesk/core/thread/ThreadEntity.java
+++ b/modules/core/src/main/java/com/bytedesk/core/thread/ThreadEntity.java
@@ -150,8 +150,28 @@ public class ThreadEntity extends AbstractThreadEntity {
         return getClient().equals(ClientEnum.WECHAT_MINI.name());
     }
 
+    /**
+     * 检查会话是否曾经处于离线状态
+     */
+    public Boolean wasOffline() {
+        ThreadExtra extra = getThreadExtra();
+        return extra != null && extra.isWasOffline();
+    }
+
+    /**
+     * 将当前会话标记为离线状态
+     */
     public ThreadEntity setOffline() {
         setStatus(ThreadProcessStatusEnum.OFFLINE.name());
+        
+        // 更新extra信息，记录曾经处于离线状态
+        ThreadExtra extra = getThreadExtra();
+        if (extra == null) {
+            extra = new ThreadExtra();
+        }
+        extra.setWasOffline(true);
+        setExtra(JSON.toJSONString(extra));
+        
         return this;
     }
 
diff --git a/modules/core/src/main/java/com/bytedesk/core/thread/ThreadExtra.java b/modules/core/src/main/java/com/bytedesk/core/thread/ThreadExtra.java
index a2c65cc934..101917de06 100644
--- a/modules/core/src/main/java/com/bytedesk/core/thread/ThreadExtra.java
+++ b/modules/core/src/main/java/com/bytedesk/core/thread/ThreadExtra.java
@@ -16,9 +16,19 @@ package com.bytedesk.core.thread;
 import java.io.Serializable;
 
 import lombok.Data;
+import lombok.Builder;
+import lombok.NoArgsConstructor;
+import lombok.AllArgsConstructor;
+import lombok.experimental.Accessors;
 
 @Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@Accessors(chain = true)
 public class ThreadExtra implements Serializable {
 
     private static final long serialVersionUID = 1L;
+    
+    private boolean wasOffline; // 标记此会话是否曾经处于离线状态
 }
diff --git a/modules/service/src/main/java/com/bytedesk/service/queue/QueueEntity.java b/modules/service/src/main/java/com/bytedesk/service/queue/QueueEntity.java
index f472cff397..de466cbdca 100644
--- a/modules/service/src/main/java/com/bytedesk/service/queue/QueueEntity.java
+++ b/modules/service/src/main/java/com/bytedesk/service/queue/QueueEntity.java
@@ -94,11 +94,13 @@ public class QueueEntity extends BaseEntity {
     }
 
     /**
-     * 获取请求时客服离线的人数
+     * 获取请求时客服离线的人数（包括当前离线和曾经离线但已关闭的）
      */
     public int getOfflineCount() {
         return (int) queueMembers.stream()
-                .filter(member -> member.getThread() != null && member.getThread().isOffline())
+                .filter(member -> member.wasOffline() || 
+                       (member.getThread() != null && member.getThread().isOffline()) ||
+                       (member.getThread() != null && member.getThread().wasOffline()))
                 .count();
     }
 
diff --git a/modules/service/src/main/java/com/bytedesk/service/queue_member/QueueMemberEntity.java b/modules/service/src/main/java/com/bytedesk/service/queue_member/QueueMemberEntity.java
index 5007841af1..b839712413 100644
--- a/modules/service/src/main/java/com/bytedesk/service/queue_member/QueueMemberEntity.java
+++ b/modules/service/src/main/java/com/bytedesk/service/queue_member/QueueMemberEntity.java
@@ -2,7 +2,7 @@
  * @Author: jackning 270580156@qq.com
  * @Date: 2024-10-14 17:23:58
  * @LastEditors: jackning 270580156@qq.com
- * @LastEditTime: 2025-04-03 16:11:11
+ * @LastEditTime: 2025-04-05 11:39:24
  * @Description: bytedesk.com https://github.com/Bytedesk/bytedesk
  *   Please be aware of the BSL license restrictions before installing Bytedesk IM – 
  *  selling, reselling, or hosting Bytedesk IM as a service is a breach of the terms and automatically terminates your rights under the license.
@@ -178,6 +178,10 @@ public class QueueMemberEntity extends BaseEntity {
     @Builder.Default
     @Column(name = "queue_workgroup", length = BytedeskConsts.COLUMN_EXTRA_LENGTH)
     private String workgroup = BytedeskConsts.EMPTY_JSON_STRING;
+
+    @Builder.Default
+    @Column(name = "was_offline")
+    private boolean wasOffline = false;  // 标记该会话是否曾处于离线状态
     
     /**
      * 计算等待时间(秒)
@@ -209,4 +213,18 @@ public class QueueMemberEntity extends BaseEntity {
         // 计算等待时间
         this.waitTime = (int) Duration.between(enqueueTime, acceptTime).getSeconds();
     }
+
+    /**
+     * 标记为离线状态
+     */
+    public void markAsOffline() {
+        this.wasOffline = true;
+    }
+
+    /**
+     * 检查是否曾经是离线状态
+     */
+    public boolean wasOffline() {
+        return this.wasOffline || (thread != null && thread.isOffline());
+    }
 }
diff --git a/modules/service/src/main/java/com/bytedesk/service/routing_strategy/AgentThreadRoutingStrategy.java b/modules/service/src/main/java/com/bytedesk/service/routing_strategy/AgentThreadRoutingStrategy.java
index 50c208bfb5..5910c66011 100644
--- a/modules/service/src/main/java/com/bytedesk/service/routing_strategy/AgentThreadRoutingStrategy.java
+++ b/modules/service/src/main/java/com/bytedesk/service/routing_strategy/AgentThreadRoutingStrategy.java
@@ -216,12 +216,17 @@ public class AgentThreadRoutingStrategy implements ThreadRoutingStrategy {
         thread.setOffline()
             .setUnreadCount(0)
             .setContent(agent.getMessageLeaveSettings().getMessageLeaveTip());
+        
+        // 标记QueueMember为离线状态
+        queueMemberEntity.markAsOffline();
+        queueMemberRestService.save(queueMemberEntity);
+        
         ThreadEntity savedThread = threadService.save(thread);
         if (savedThread == null) {
             log.error("Failed to save thread {}", thread.getUid());
             throw new RuntimeException("Failed to save thread " + thread.getUid());
         }
-        // 
+        
         // 查询最新一条消息，如果距离当前时间不超过30分钟，则直接使用之前的消息，否则创建新的消息
         Optional<MessageEntity> messageOptional = messageRestService.findLatestByThreadUid(savedThread.getUid());
         if (messageOptional.isPresent()) {