介绍了一种基于ARM9 的嵌入式车载网关的软硬件系统设计，简要阐述了车载LIN 网络，CAN 网络与互联网通过该网关的连接方案，详细介绍了基于AMR9 和Linux 环境下的LIN协议编程、CAN 设备驱动程序开发、网络编程,该研究对将来智能网络汽车的广泛应用有着重要而现实的意义.关键词：网关; CAN; 嵌入式; ARMAbstract：The design of embedded car gateway software and hardware system based onARM9 is introduced in this paper, The plan which connects LIN Network and CAN Network with Internet by the gateway is described in brief, The programming of LIN protocol 、 the development of CAN equipment driver 、socket programming based on ARM9 and Linuxis detailedly presented. This study is of important and practical significance to the realization and application of intelligent nectar in the future.Keywords：gateway; CAN ;Embedded; ARM