diff --git a/src/telegram_codex_bot/bot.py b/src/telegram_codex_bot/bot.py
index 0b3dd1a..b13008d 100644
--- a/src/telegram_codex_bot/bot.py
+++ b/src/telegram_codex_bot/bot.py
@@ -300,6 +300,37 @@ async def _safe_send_typing_action(chat: Chat, *, source: str) -> None:
 }
 
 
+_FORWARDED_COMMAND_RE = re.compile(
+    r"^/(?P<name>[A-Za-z0-9_]+)(?:@[A-Za-z0-9_]+)?(?P<rest>.*)$"
+)
+_COMMAND_ARG_SEPARATORS = ".。"
+
+
+def _normalize_forward_command_text(cmd_text: str) -> str:
+    """Normalize Telegram slash commands before forwarding them to Codex."""
+    match = _FORWARDED_COMMAND_RE.match(cmd_text)
+    if not match:
+        return cmd_text
+
+    command_name = match.group("name")
+    rest = match.group("rest") or ""
+    normalized = f"/{command_name}"
+
+    # Telegram users sometimes type "/goal.继续..." from Chinese input. Codex
+    # expects a space between a known slash command and its argument; without it
+    # the TUI can leave the text pending and the bot reports a low-level send
+    # failure. Keep this limited to known Codex commands so arbitrary forwarded
+    # commands keep their original spelling.
+    if (
+        command_name.lower() in CC_COMMANDS
+        and rest
+        and rest[0] in _COMMAND_ARG_SEPARATORS
+    ):
+        rest = " " + rest[1:].lstrip()
+
+    return normalized + rest
+
+
 class _DirectoryBrowserKwargs(TypedDict, total=False):
     root_label: str
     root_path: str
@@ -1983,8 +2014,10 @@ async def forward_command_handler(
         session_manager.set_group_chat_id(user.id, thread_id, chat.id)
 
     cmd_text = update.message.text or ""
-    # The full text is already a slash command like "/clear" or "/compact foo"
-    cc_slash = cmd_text.split("@")[0]  # strip bot mention
+    # The full text is already a slash command like "/clear" or "/compact foo".
+    # Strip only a Telegram bot mention in the command token; keep @mentions
+    # in command arguments intact.
+    cc_slash = _normalize_forward_command_text(cmd_text)
     wid = session_manager.resolve_window_for_thread(user.id, thread_id)
     target = session_manager.resolve_target_for_thread(user.id, thread_id)
     if not wid and not target:
diff --git a/tests/telegram_codex_bot/test_forward_command.py b/tests/telegram_codex_bot/test_forward_command.py
index ff54921..58255ba 100644
--- a/tests/telegram_codex_bot/test_forward_command.py
+++ b/tests/telegram_codex_bot/test_forward_command.py
@@ -120,6 +120,68 @@ async def test_goal_sends_command_to_tmux(self):
 
             mock_send.assert_awaited_once_with(context.bot, 1, 42, "@5", "/goal")
 
+    @pytest.mark.asyncio
+    async def test_goal_dot_argument_is_normalized_before_forwarding(self):
+        """/goal.中文参数 → /goal 中文参数 for Codex."""
+        update = _make_update("/goal.继续完成验证")
+        context = _make_context()
+
+        with (
+            patch("telegram_codex_bot.bot.is_user_allowed", return_value=True),
+            patch("telegram_codex_bot.bot._get_thread_id", return_value=42),
+            patch("telegram_codex_bot.bot.session_manager") as mock_sm,
+            patch(
+                "telegram_codex_bot.bot._send_or_queue_agent_input",
+                new_callable=AsyncMock,
+            ) as mock_send,
+            patch("telegram_codex_bot.bot.safe_reply", new_callable=AsyncMock),
+        ):
+            mock_sm.resolve_window_for_thread.return_value = "@5"
+            mock_sm.resolve_target_for_thread.return_value = AgentTarget(
+                "local", "local", window_id="@5"
+            )
+            mock_sm.get_display_name.return_value = "project"
+            mock_send.return_value = (True, "ok", False)
+
+            from telegram_codex_bot.bot import forward_command_handler
+
+            await forward_command_handler(update, context)
+
+            mock_send.assert_awaited_once_with(
+                context.bot, 1, 42, "@5", "/goal 继续完成验证"
+            )
+
+    @pytest.mark.asyncio
+    async def test_bot_mention_keeps_command_arguments(self):
+        """/goal@bot args → /goal args without dropping @ in args."""
+        update = _make_update("/goal@CodexBot inspect @filename")
+        context = _make_context()
+
+        with (
+            patch("telegram_codex_bot.bot.is_user_allowed", return_value=True),
+            patch("telegram_codex_bot.bot._get_thread_id", return_value=42),
+            patch("telegram_codex_bot.bot.session_manager") as mock_sm,
+            patch(
+                "telegram_codex_bot.bot._send_or_queue_agent_input",
+                new_callable=AsyncMock,
+            ) as mock_send,
+            patch("telegram_codex_bot.bot.safe_reply", new_callable=AsyncMock),
+        ):
+            mock_sm.resolve_window_for_thread.return_value = "@5"
+            mock_sm.resolve_target_for_thread.return_value = AgentTarget(
+                "local", "local", window_id="@5"
+            )
+            mock_sm.get_display_name.return_value = "project"
+            mock_send.return_value = (True, "ok", False)
+
+            from telegram_codex_bot.bot import forward_command_handler
+
+            await forward_command_handler(update, context)
+
+            mock_send.assert_awaited_once_with(
+                context.bot, 1, 42, "@5", "/goal inspect @filename"
+            )
+
     @pytest.mark.asyncio
     async def test_command_queues_during_interactive_ui(self):
         update = _make_update("/model")