Expressway tunnel fire control linkage system and control method

The invention discloses a tunnel fire control linkage system and a control method, wherein the tunnel fire control linkage system comprises tunnel internal fire fighting equipment, manual alarm equipment, a tunnel internal fire fighting management system, a fire alarm system local area network, a tunnel television monitoring system, a broadcasting system and an emergency telephone. When presence of fire in a tunnel is detected, warning signals are sent to a fire alarm control unit through the fire alarm system local area network, and the fire alarm control unit contacts an information board arranged at the entrance of the tunnel to send information about what happened in the tunnel according to a pre-arranged emergency plan, and contacts a traffic light so as to set the traffic light at a state of no entry.