The invention relates to an electric vehicle cleaning device. The electric vehicle cleaning device comprises a concave support, and two installation lugs are symmetrically arranged at the two ends of the concave support; a rotating motor is installed on the inner wall of the left end of the concave support through a motor base, a lead screw is connected to an output shaft of the rotating motor, the right end of the lead screw is installed on the inner wall of the right side of the concave support through a bearing, and the lead screw is driven to rotate through the rotating motor; a moving block is installed in the middle of the lead screw in a threaded connection mode, two linear slide rails are installed on the lower end face of the moving block and symmetrically installed on the inner wall of the concave support through screws, and the linear slide rails play a role of limiting the motion direction of the moving block; a rigid support device is installed on the upper end face of the moving block, and a high pressure cleaning device is installed on the upper end face of the rigid support device. According to the electric vehicle cleaning device, stable automated rotating and cleaning functions of new energy vehicles can be achieved, and the electric vehicle cleaning device has the advantages of being good in rigid support performance, free of manual cleaning, high in degree of automation, good in cleaning effect, uniform in degree of washing and the like.