The invention relates to a display device capable of adjusting a color temperature and brightness. The display device is characterized by comprising a power supply circuit, a color temperature adjustment circuit, a brightness adjustment circuit, an LED illuminating panel and a detection display device, wherein the units are arranged inside the display device. A color temperature adjustment buttonand a brightness adjustment button are arranged externally. A color temperature-brightness changing relationship is observed visually and vividly by adjusting the color temperature and brightness changes of the LED illuminating panel; and the color temperature and brightness values are displayed in real time by monitoring the display device. At present, most of science and technology museums display the color temperature-brightness relationship by means of texts, images, physical models and corresponding video animations. According to the display device, the interaction and entertainment are enhanced; the audience is able to obtain the color temperature and brightness meanings visually and vividly by own interactive experience, so that a defect of being lack of the kind of display device for the science and technology museum is overcome.