diff --git a/app/lora/lora_mesh_uart_passthrough_manager.py b/app/lora/lora_mesh_uart_passthrough_manager.py
index bca4207..53caa54 100644
--- a/app/lora/lora_mesh_uart_passthrough_manager.py
+++ b/app/lora/lora_mesh_uart_passthrough_manager.py
@@ -116,7 +116,7 @@ class LoRaMeshUartPassthroughManager:
                 log(f"LoRa: 接收到错误帧头: {hex(self._rx_buffer[0])}，正在寻找下一个ED...")
                 next_ed = self._rx_buffer.find(b'\xed', 1)
                 if next_ed == -1:
-                    self._rx_buffer.clear()
+                    self._rx_buffer[:] = b''
                 else:
                     self._rx_buffer = self._rx_buffer[next_ed:]
                 continue