Taking the actuator of the automatic drying control box of the lift as the design goal,the parameters are determined,the mechanical structure is designed,the modem aided design software is used to carry out three-dimensional modeling and dynamic simulation,and the results are improved to improve the reliability of the design of the drying box,and the dryness protection of the internal circuit and sensitive electrical components of the elevator control box is realized,so as to improve the safety of automobile lifting operation.