An automatic sliding mechanism is described. The automatic sliding mechanism includes a base, a sliding frame, a rail device, an actuating device, a frame recovery device, and a damping device. The rail device couples the sliding frame to the base, and the sliding frame slides along the rail device. The actuating device locks or unlocks the sliding frame in the base. The frame recovery device provides a spring force to move the sliding frame, and the damping device reduces the moving speed of the sliding frame.