The paper presents briefly the function and configuration of the radio communication system for metro, and analyzes the issues such as selection, radio coverage, bleeder cable, introduction of public network, and lightning protection associated with radio communication system. 简介地铁无线通信系统的功能与组成,分析了无线通信系统制式的选择、覆盖方式、漏泄电缆选择、公网引入等问题。