diff --git a/internal/db/models/dns/dns_task_dao.go b/internal/db/models/dns/dns_task_dao.go
index cf9ae302..c433e079 100644
--- a/internal/db/models/dns/dns_task_dao.go
+++ b/internal/db/models/dns/dns_task_dao.go
@@ -56,11 +56,13 @@ func (this *DNSTaskDAO) CreateDNSTask(tx *dbs.Tx, clusterId int64, serverId int6
 		"isDone":     false,
 		"isOk":       false,
 		"error":      "",
+		"version":    time.Now().UnixNano(),
 	}, maps.Map{
 		"updatedAt": time.Now().Unix(),
 		"isDone":    false,
 		"isOk":      false,
 		"error":     "",
+		"version":   time.Now().UnixNano(),
 	})
 	return err
 }
@@ -94,6 +96,7 @@ func (this *DNSTaskDAO) CreateDomainTask(tx *dbs.Tx, domainId int64, taskType DN
 func (this *DNSTaskDAO) FindAllDoingTasks(tx *dbs.Tx) (result []*DNSTask, err error) {
 	_, err = this.Query(tx).
 		Attr("isDone", 0).
+		Asc("version").
 		AscPk().
 		Slice(&result).
 		FindAll()
@@ -109,6 +112,7 @@ func (this *DNSTaskDAO) FindAllDoingOrErrorTasks(tx *dbs.Tx, nodeClusterId int64
 	_, err = query.
 		Where("(isDone=0 OR (isDone=1 AND isOk=0))").
 		Asc("updatedAt").
+		Asc("version").
 		AscPk().
 		Slice(&result).
 		FindAll()
@@ -163,3 +167,13 @@ func (this *DNSTaskDAO) UpdateDNSTaskDone(tx *dbs.Tx, taskId int64) error {
 	op.Error = ""
 	return this.Save(tx, op)
 }
+
+// DeleteDNSTasksWithClusterId 删除集群相关任务
+func (this *DNSTaskDAO) DeleteDNSTasksWithClusterId(tx *dbs.Tx, clusterId int64) error {
+	if clusterId <= 0 {
+		return nil
+	}
+	return this.Query(tx).
+		Attr("clusterId", clusterId).
+		DeleteQuickly()
+}
diff --git a/internal/db/models/dns/dns_task_model.go b/internal/db/models/dns/dns_task_model.go
index f04dd952..f1108b44 100644
--- a/internal/db/models/dns/dns_task_model.go
+++ b/internal/db/models/dns/dns_task_model.go
@@ -13,20 +13,22 @@ type DNSTask struct {
 	IsDone     bool   `field:"isDone"`     // 是否已完成
 	IsOk       bool   `field:"isOk"`       // 是否成功
 	Error      string `field:"error"`      // 错误信息
+	Version    uint64 `field:"version"`    // 版本
 }
 
 type DNSTaskOperator struct {
-	Id         interface{} // ID
-	ClusterId  interface{} // 集群ID
-	ServerId   interface{} // 服务ID
-	NodeId     interface{} // 节点ID
-	DomainId   interface{} // 域名ID
-	RecordName interface{} // 记录名
-	Type       interface{} // 任务类型
-	UpdatedAt  interface{} // 更新时间
-	IsDone     interface{} // 是否已完成
-	IsOk       interface{} // 是否成功
-	Error      interface{} // 错误信息
+	Id         any // ID
+	ClusterId  any // 集群ID
+	ServerId   any // 服务ID
+	NodeId     any // 节点ID
+	DomainId   any // 域名ID
+	RecordName any // 记录名
+	Type       any // 任务类型
+	UpdatedAt  any // 更新时间
+	IsDone     any // 是否已完成
+	IsOk       any // 是否成功
+	Error      any // 错误信息
+	Version    any // 版本
 }
 
 func NewDNSTaskOperator() *DNSTaskOperator {
diff --git a/internal/db/models/node_cluster_dao.go b/internal/db/models/node_cluster_dao.go
index 8c4359e7..2883d3eb 100644
--- a/internal/db/models/node_cluster_dao.go
+++ b/internal/db/models/node_cluster_dao.go
@@ -466,7 +466,7 @@ func (this *NodeClusterDAO) FindClusterDNSInfo(tx *dbs.Tx, clusterId int64, cach
 
 	one, err := this.Query(tx).
 		Pk(clusterId).
-		Result("id", "name", "dnsName", "dnsDomainId", "dns", "isOn").
+		Result("id", "name", "dnsName", "dnsDomainId", "dns", "isOn", "state").
 		Find()
 	if err != nil {
 		return nil, err
@@ -510,10 +510,16 @@ func (this *NodeClusterDAO) UpdateClusterDNS(tx *dbs.Tx, clusterId int64, dnsNam
 
 	var oldCluster = oldOne.(*NodeCluster)
 	var oldDNSDomainId = int64(oldCluster.DnsDomainId)
+	var shouldRemoveOld = false
 	if (oldDNSDomainId > 0 && oldDNSDomainId != dnsDomainId) || (oldCluster.DnsName != dnsName) {
-		err = dns.SharedDNSTaskDAO.CreateClusterRemoveTask(tx, clusterId, oldDNSDomainId, oldCluster.DnsName)
-		if err != nil {
-			return err
+		if oldDNSDomainId == dnsDomainId {
+			// 如果只是换子域名，需要在新的域名添加之前，先删除老的子域名，防止无法添加CNAME
+			err = dns.SharedDNSTaskDAO.CreateClusterRemoveTask(tx, clusterId, oldDNSDomainId, oldCluster.DnsName)
+			if err != nil {
+				return err
+			}
+		} else {
+			shouldRemoveOld = true
 		}
 	}
 
@@ -548,7 +554,20 @@ func (this *NodeClusterDAO) UpdateClusterDNS(tx *dbs.Tx, clusterId int64, dnsNam
 	if err != nil {
 		return err
 	}
-	return this.NotifyDNSUpdate(tx, clusterId)
+	err = this.NotifyDNSUpdate(tx, clusterId)
+	if err != nil {
+		return err
+	}
+
+	// 删除老的记录
+	if shouldRemoveOld {
+		err = dns.SharedDNSTaskDAO.CreateClusterRemoveTask(tx, clusterId, oldDNSDomainId, oldCluster.DnsName)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
 }
 
 // FindClusterAdminId 查找集群所属管理员
diff --git a/internal/rpc/services/service_node_cluster.go b/internal/rpc/services/service_node_cluster.go
index 5ea42037..7b1ec4d5 100644
--- a/internal/rpc/services/service_node_cluster.go
+++ b/internal/rpc/services/service_node_cluster.go
@@ -143,18 +143,37 @@ func (this *NodeClusterService) DeleteNodeCluster(ctx context.Context, req *pb.D
 		return nil, err
 	}
 
-	// 删除集群
-	err = models.SharedNodeClusterDAO.DisableNodeCluster(tx, req.NodeClusterId)
+	// 删除现有的DNS相关任务
+	err = dns.SharedDNSTaskDAO.DeleteDNSTasksWithClusterId(tx, req.NodeClusterId)
 	if err != nil {
 		return nil, err
 	}
 
+	// 生成新的删除DNS任务
+	dnsInfo, err := models.SharedNodeClusterDAO.FindClusterDNSInfo(tx, req.NodeClusterId, nil)
+	if err != nil {
+		return nil, err
+	}
+	if dnsInfo != nil {
+		var oldDNSDomainId = int64(dnsInfo.DnsDomainId)
+		err = dns.SharedDNSTaskDAO.CreateClusterRemoveTask(tx, req.NodeClusterId, oldDNSDomainId, dnsInfo.DnsName)
+		if err != nil {
+			return nil, err
+		}
+	}
+
 	// 删除相关任务
 	err = models.SharedNodeTaskDAO.DeleteAllClusterTasks(tx, nodeconfigs.NodeRoleNode, req.NodeClusterId)
 	if err != nil {
 		return nil, err
 	}
 
+	// 删除集群
+	err = models.SharedNodeClusterDAO.DisableNodeCluster(tx, req.NodeClusterId)
+	if err != nil {
+		return nil, err
+	}
+
 	return this.Success()
 }
 
diff --git a/internal/tasks/dns_task_executor.go b/internal/tasks/dns_task_executor.go
index 535d8755..63a46837 100644
--- a/internal/tasks/dns_task_executor.go
+++ b/internal/tasks/dns_task_executor.go
@@ -525,11 +525,13 @@ func (this *DNSTaskExecutor) doClusterRemove(taskId int64, clusterId int64, doma
 	}()
 
 	var tx *dbs.Tx
+
+	dnsInfo, err := models.SharedNodeClusterDAO.FindClusterDNSInfo(tx, clusterId, nil)
+	if err != nil {
+		return err
+	}
+
 	if len(dnsName) == 0 {
-		dnsInfo, err := models.SharedNodeClusterDAO.FindClusterDNSInfo(tx, clusterId, nil)
-		if err != nil {
-			return err
-		}
 		if dnsInfo == nil {
 			isOk = true
 			return nil
@@ -541,6 +543,12 @@ func (this *DNSTaskExecutor) doClusterRemove(taskId int64, clusterId int64, doma
 		}
 	}
 
+	// 再次检查是否正在使用，如果正在使用，则直接返回
+	if dnsInfo != nil && dnsInfo.State == models.NodeClusterStateEnabled /** 尚未被删除 **/ && int64(dnsInfo.DnsDomainId) == domainId && dnsInfo.DnsName == dnsName {
+		isOk = true
+		return nil
+	}
+
 	domain, manager, err := this.findDNSManagerWithDomainId(tx, domainId)
 	if err != nil {
 		return err