A method for controlling display device by using double buttons is provided. The method comprises the following steps: pressing a power button of a double buttons so as to turn on the display device when the display device is turned off; pressing a menu button of the double buttons so as to start an On Screen Display (OSD) menu on a screen of the display device when the display device is turned on; after entering the OSD menu, pressing the power button or the menu button and surfing the OSD menu;simultaneously pressing the double buttons so as to actuate a optional function when a cursor is at the optional function of the OSD menu; after actuating the optional function, entering a sub menu and then pressing the power button or the menu button so as to surf the sub menu, simultaneously pressing the double buttons so as to actuate the optional function under the sub menu if the optional function contains the sub menu; pressing the power button or the menu button so as to control the setting of the optional function if the actuated optional function contains numerical or optional setting; simultaneously pressing the double buttons so as to finish the setting and exit the OSD menu.