diff --git a/app.log b/app.log
deleted file mode 100644
index e69de29..0000000
diff --git a/src/summarizer.py b/src/summarizer.py
index 1d91753..e84982f 100644
--- a/src/summarizer.py
+++ b/src/summarizer.py
@@ -25,12 +25,12 @@ def ai_process(cfg: Config, acct_idx: int, mail: Email, tg_msg_id: int = 0) -> O
     logger.info(f"  正在摘要: {mail.subject}")
     # 阶段1：显示等待处理
     if tg_msg_id:
-        edit_message(cfg.telegram, cfg.telegram.chat_id, tg_msg_id, "⏳ 等待处理...")
+        edit_message(cfg.telegram, cfg.telegram.chat_id, tg_msg_id, "⏳ 等待处理...", parse_mode=None)
     else:
         tg_msg_id = send_thinking(cfg.telegram, cfg.telegram.chat_id, "⏳ 等待处理...")
 
     # 阶段2：AI 处理，更新为思考中
-    edit_message(cfg.telegram, cfg.telegram.chat_id, tg_msg_id, "🤖 AI思考中...")
+    edit_message(cfg.telegram, cfg.telegram.chat_id, tg_msg_id, "🤖 AI思考中...", parse_mode=None)
     summary = summarize_email(cfg.ai, mail.recipient, mail.subject, mail.sender, mail.body, mail.account_email)
     summary["recipient"] = mail.recipient
     if "@" not in summary.get("sender", ""):
diff --git a/src/tg_bot.py b/src/tg_bot.py
index c871207..fc058d3 100644
--- a/src/tg_bot.py
+++ b/src/tg_bot.py
@@ -66,10 +66,10 @@ def send_thinking(tg_cfg: TelegramConfig, chat_id: str, text: str = "💭 思考
 
 
 def edit_message(tg_cfg: TelegramConfig, chat_id: str, msg_id: int,
-                 text: str, reply_markup: dict = None):
+                 text: str, reply_markup: dict = None, parse_mode: str = "MarkdownV2"):
     payload = {
         "chat_id": chat_id, "message_id": msg_id,
-        "text": text, "parse_mode": "MarkdownV2",
+        "text": text, "parse_mode": parse_mode,
     }
     if reply_markup:
         payload["reply_markup"] = reply_markup