This paper takes the multiposition control of single group light for a example, analyzes the inadequacy of the existent multi-position control circuit of mechanical selector switch, and introduces the basic working principle and practical circuit of the multi-position control circuit formed by the electronics logic switch. 本文以单组照明灯的多地点控制为例,分析了机械式组合开关的多地点控制电路存在的不足之处;介绍电子式逻辑开关组成的多地点控制电路的基本工作原理及实用电路。