The invention discloses a cable channel emergency communication system, including a short-range switch, a wireless communication module and a UPS. The short-range switch connects a control center through an intranet communication line, and the short-range switch also connects communication nodes in each tunnel through a large data communication line. The beneficial effects are that that: 1, the system adopts the UPS power supply mode, and the emergency call terminal in the tunnel does not need to take electricity at the scene; 2, the all-digital design, the IP communication technology design and the rich communication interfaces can be integrated with the vast majority of communication networks; and 3, the emergency call terminal support a key to trigger the call control center, after the call is triggered, the conversation process is controlled by the control center, and the control center can conveniently takes treatment in the emergency condition.