diff --git a/internal/store/bot_direct_message_store.go b/internal/store/bot_direct_message_store.go
index aacc0d2..0696cdc 100644
--- a/internal/store/bot_direct_message_store.go
+++ b/internal/store/bot_direct_message_store.go
@@ -290,27 +290,24 @@ func insertInboundBotDirectMessage(s *Store, record map[string]any, clientInfo M
 	}
 	_ = clientInfo // mqtt 元数据已经记录在 content_json 里，这里保留参数以保持队列签名一致
 
-	// 同时将消息添加到 LLM 队列（忽略机器人自己发送的消息）
-	if peerNodeID != bot.NodeID {
-		longName := NullableString(record["long_name"])
-		shortName := NullableString(record["short_name"])
-		channelID := NullableString(record["channel_id"])
-		_, err = s.EnqueueLLMMessage(LLMMessageQueueInput{
-			BotID:       bot.ID,
-			BotNodeID:   bot.NodeID,
-			BotNodeNum:  bot.NodeNum,
-			FromNodeID:  peerNodeID,
-			FromNodeNum: int64(peerNum),
-			LongName:    longName,
-			ShortName:   shortName,
-			Text:        text,
-			PacketID:    int64(packetID),
-			ChannelID:   channelID,
-			Topic:       topic,
-			MessageType: "direct",
-			ContentJSON: contentPtr,
-		})
-	}
+	longName := NullableString(record["long_name"])
+	shortName := NullableString(record["short_name"])
+	channelID := NullableString(record["channel_id"])
+	_, err = s.EnqueueLLMMessage(LLMMessageQueueInput{
+		BotID:       bot.ID,
+		BotNodeID:   bot.NodeID,
+		BotNodeNum:  bot.NodeNum,
+		FromNodeID:  peerNodeID,
+		FromNodeNum: int64(peerNum),
+		LongName:    longName,
+		ShortName:   shortName,
+		Text:        text,
+		PacketID:    int64(packetID),
+		ChannelID:   channelID,
+		Topic:       topic,
+		MessageType: "direct",
+		ContentJSON: contentPtr,
+	})
 	if err != nil {
 		printJSON(map[string]any{
 			"event":   "llm_queue_enqueue_failed",
diff --git a/internal/store/bot_store.go b/internal/store/bot_store.go
index 32af45e..06a9ea7 100644
--- a/internal/store/bot_store.go
+++ b/internal/store/bot_store.go
@@ -66,6 +66,12 @@ func (s *Store) CountBotNodes(opts ListOptions) (int64, error) {
 	return total, s.db.Model(&BotNodeRecord{}).Count(&total).Error
 }
 
+func (s *Store) IsBotNodeID(nodeID string) bool {
+	var count int64
+	s.db.Model(&BotNodeRecord{}).Where("node_id = ?", nodeID).Count(&count)
+	return count > 0
+}
+
 func (s *Store) GetBotNode(id uint64) (*BotNodeRecord, error) {
 	var row BotNodeRecord
 	if err := s.db.Where("id = ?", id).Take(&row).Error; err != nil {
diff --git a/internal/store/llm_store.go b/internal/store/llm_store.go
index 653ad83..98a1a47 100644
--- a/internal/store/llm_store.go
+++ b/internal/store/llm_store.go
@@ -306,8 +306,7 @@ func (s *Store) EnqueueLLMMessage(input LLMMessageQueueInput) (*LLMMessageQueueR
 		return nil, nil // 机器人的 LLM 队列未启用，静默返回
 	}
 
-	// 忽略机器人自己发送的消息，避免自循环
-	if input.FromNodeID == bot.NodeID {
+	if s.IsBotNodeID(input.FromNodeID) {
 		return nil, nil
 	}
 
@@ -526,6 +525,10 @@ func enqueueChannelMessageToLLM(s *Store, record map[string]any) error {
 		shortName = &sn
 	}
 
+	if s.IsBotNodeID(fromNodeID) {
+		return nil
+	}
+
 	var channelID *string
 	if cid, ok := record["channel_id"].(string); ok && cid != "" {
 		channelID = &cid
@@ -546,11 +549,7 @@ func enqueueChannelMessageToLLM(s *Store, record map[string]any) error {
 		return fmt.Errorf("query bots for channel message enqueue: %w", err)
 	}
 
-	// 为每个符合条件的机器人创建一条队列记录（忽略机器人自己发送的消息）
 	for _, bot := range bots {
-		if fromNodeID == bot.NodeID {
-			continue
-		}
 		_, err = s.EnqueueLLMMessage(LLMMessageQueueInput{
 			BotID:       bot.ID,
 			BotNodeID:   bot.NodeID,