Bus broadcast intercom system

The invention discloses a bus broadcast intercom system, comprising a central bus switcher, a terminal, a multi-channel audio bus and a telephone relay module, wherein the audio bus is connected with the central bus switcher, bus sockets are connected to the audio bus at intervals, the telephone relay module is arranged on the central bus switcher, and the terminal is connected with the bus sockets. According to the bus broadcast intercom system disclosed by the invention, the technical problems that the circuit is too complicated, the operation is complex, and people cannot conveniently use the system in emergency situations in the prior art can be solved. 本发明公开种总线广播对讲系统，包括中心总线切换器、终端、多路音频总线和电话中继模块，音频总线与中心总线切换器连接，且音频总线上间隔连接有总线插座，中心总线切换器上设置有所述电话中继模块，终端与总线插座连接，本发明解决现有技术中线路过于复杂，操作繁琐，不能方便人员在危急情况下使用的技术问题。