The invention belongs to the technical field of tunnel lighting, and particularly relates to a tunnel entrance light adapting reinforcement lighting system which comprises a tunnel entrance monitor, a PLC (programmable logic controller) control device and a lighting device. The tunnel entrance monitor is connected with the PLC control device, a switch is arranged on the lighting device, and the PLC control device is connected with the switch on the lighting device. A tunnel intelligent lighting system is improved, and complexity of the system is lowered; a circuit is simple in design and convenient for working personnel to use, so that workload is reduced, and working efficiency is improved. Due to design of the reinforcement lighting control system, lighting safety is improved, traveling safety is guaranteed, fatigue of a driver is relieved, electric energy waste is reduced, and the system plays a great role in promoting conservation-minded society construction.