This invention discloses a washing machine, including following parts: a roller for accepting washings; a motor connected with the roller and for providing driving force; a main controller for controlling the driving of the motor; a display device that controls through the main control and is used for displaying operations of the motor; a display device controller for controlling operations of the display device, wherein the ground of the main controller is mutually separated from the ground of the display device controller. The washing machine of this invention separates the ground of the main controller and the ground of the display device controller so as to prevent the display device controller from damaging under the condition that the insulated layer is damaged caused by moisture vapor transmission.