The invention discloses a sunshade plate automatic lifting system and a control method thereof, and relates to the technical field of vehicle auxiliary parts. The sunshade plate automatic lifting system used for automatic lifting of a sunshade plate comprises the sunshade plate, a sensor module, a motor and an integrated controller. The sunshade plate is used for shading sunshine and preventing light from irradiating eyes of a driver. The sensor module is used for acquiring the position of the light irradiation and the eyes to judge whether the light passes through the eyes or not. The motor is mounted on the sunshade plate for driving the sunshade plate to descend or rise. The integrated controller is used for controlling the operating state of the motor when it is judged that the light passes through the eyes. The invention further provides the corresponding control method. According to the sunshade plate automatic lifting system and the control method thereof, the driver does not need to manually operate the sunshade plate, the sunshade plate can be lifted automatically for sunshading, the safety hazard of the driver in the vehicle driving process is reduced, the traffic accidents caused thereby are reduced, and the perceived quality of the vehicle is improved.