The invention relates to an electric vehicle charging device and a driving method of a charging device protecting cover. The electric vehicle charging device comprises a charging electrode and a protecting cover used for shielding and exposing the charging electrode; the electric vehicle charging device further comprises a bearing platform capable of being pressed down under the action of gravityforce; when a vehicle runs to the bearing platform, the bearing platform is pressed down under the action of the gravity force of the vehicle, and the bearing platform is connected with the protectingcover through a mechanical transmission structure; and when being pressed down under the gravity force of the vehicle, the bearing platform can drive the protecting cover to expose the charging electrode through the mechanical transmission structure. The bearing platform is driven by the gravity force of the electric vehicle to be pressed down and controls the protecting cover to move to expose the charging electrode through the mechanical transmission structure; the mechanical transmission structure is controlled by the gravity force of the electric vehicle so that the electric vehicle charging device is simple and reliable; and the charging electrode can be protected when the electric vehicle is not charged to prevent the charging electrode from being damaged or leaking electricity.