本文从微计算机系统雷电安全的角度介绍了接地、等电位连接、屏蔽、合理布局布线、采用浪涌保护器SPD（Surge Protection Device）等多种措施相互综合的雷电防护技术，文中着重阐述了采用SPD 抵御雷电波沿电源线侵入微计算机系统的措施。关键词:微机系统; 电磁脉冲;雷电防护;浪涌保护器Abstract: The paper gives an introduction of the integrated lightning protection of microcomputer system principle including grounding, equal potential linking，shielding, layout and wiring and using surge protection device. The paper lays an emphasis on taking advantage of Surge Protection Device to protect the microcomputer system from lightning strike by way of power supply line.Key Words: Microcomputer System, Electromagnetic Impulse, Lightning Protection, SurgeProtection Device