diff --git a/src/chat/replyer/default_generator.py b/src/chat/replyer/default_generator.py
index 4b02282ce..a720fd745 100644
--- a/src/chat/replyer/default_generator.py
+++ b/src/chat/replyer/default_generator.py
@@ -699,7 +699,32 @@ class DefaultReplyer:
                     )
                     read_history_prompt = f"这是已读历史消息，仅作为当前聊天情景的参考：\n{read_content}"
                 else:
-                    read_history_prompt = "暂无已读历史消息"
+                    # 如果没有已读消息，则从数据库加载最近的上下文
+                    logger.info("暂无已读历史消息，正在从数据库加载上下文...")
+                    fallback_messages = get_raw_msg_before_timestamp_with_chat(
+                        chat_id=chat_id,
+                        timestamp=time.time(),
+                        limit=global_config.chat.max_context_size,
+                    )
+                    if fallback_messages:
+                        # 从 unread_messages 获取 message_id 列表，用于去重
+                        unread_message_ids = {msg.message_id for msg in unread_messages}
+                        filtered_fallback_messages = [
+                            msg for msg in fallback_messages if msg.get("message_id") not in unread_message_ids
+                        ]
+
+                        if filtered_fallback_messages:
+                            read_content = build_readable_messages(
+                                filtered_fallback_messages,
+                                replace_bot_name=True,
+                                timestamp_mode="normal_no_YMD",
+                                truncate=True,
+                            )
+                            read_history_prompt = f"这是已读历史消息，仅作为当前聊天情景的参考：\n{read_content}"
+                        else:
+                            read_history_prompt = "暂无已读历史消息"
+                    else:
+                        read_history_prompt = "暂无已读历史消息"
 
                 # 构建未读历史消息 prompt（包含兴趣度）
                 unread_history_prompt = ""