The invention discloses an automobile lamp communication brake system, which relates to the field of automobile risk avoidance. The automobile is provided with a front camera, a rear camera, a CAN module, an automobile machine system and an AEB system, and further comprises a main control MCU, a photoelectric sensor, a front modulation module, a rear modulation module and a rear brake lamp drivingmodule. The automobile lamp and the photoelectric sensor are used for communicating the front automobile with the rear automobile through optical signals, when the front automobile brakes, deceleration of the rear automobile can be coordinated, a driver is reminded to pay attention, rear-end collision of the rear automobile is avoided, safety accidents are reduced, the structure of the automobiledoes not need to be changed, meanwhile, configuration of the automobile is greatly utilized, and installation and use cost is low.