diff --git a/astrbot/core/platform/sources/telegram/tg_adapter.py b/astrbot/core/platform/sources/telegram/tg_adapter.py
index 03ef26c1e..abf6a09ad 100644
--- a/astrbot/core/platform/sources/telegram/tg_adapter.py
+++ b/astrbot/core/platform/sources/telegram/tg_adapter.py
@@ -2,6 +2,7 @@
 import re
 import sys
 import uuid
+import os
 
 from apscheduler.schedulers.asyncio import AsyncIOScheduler
 from telegram import BotCommand, Update
@@ -21,10 +22,13 @@
     register_platform_adapter,
 )
 from astrbot.core.platform.astr_message_event import MessageSesion
+from astrbot.core.utils.astrbot_path import get_astrbot_temp_path
+from astrbot.core.utils.media_utils import convert_audio_to_wav
 from astrbot.core.star.filter.command import CommandFilter
 from astrbot.core.star.filter.command_group import CommandGroupFilter
 from astrbot.core.star.star import star_map
 from astrbot.core.star.star_handler import star_handlers_registry
+from astrbot.core.utils.io import download_file, download_image_by_url, file_to_base64
 
 from .tg_event import TelegramPlatformEvent
 
@@ -375,8 +379,19 @@ async def convert_message(
 
         elif update.message.voice:
             file = await update.message.voice.get_file()
+
+            file_basename = os.path.basename(file.file_path)
+            temp_dir = get_astrbot_temp_path()
+            temp_path = os.path.join(temp_dir, file_basename)
+            temp_path = await download_image_by_url(file.file_path, path=temp_path)
+            path_wav = os.path.join(
+                temp_dir,
+                f"{file_basename}.wav",
+            )
+            path_wav = await convert_audio_to_wav(temp_path, path_wav)
+
             message.message = [
-                Comp.Record(file=file.file_path, url=file.file_path),
+                Comp.Record(file=path_wav, url=path_wav),
             ]
 
         elif update.message.photo: