Abstract: Elevator brake as a safety part of the elevator, its stability and reliability is one of the important factors to ensure the safe and normal operation of the elevator. If the brake function fails or the braking power output cannot meet the demand, it may cause the elevator's roof squatting, car sliding and accidental movement, which will directly cause casualties and property safety losses Or the equipment is damaged. In order to monitor the working state of the brake in real time and ensure that the brake function can work normally within the required range. Based on this, this paper mainly analyzes the inspection methods of elevator brake fault protection function, for reference.