The invention discloses a quick measuring device used for measuring the chromaticity of a display. The device comprises a casing body and a measurement display. Drawer type push-pull rods are arrangedon two sides of the casing body. A clamping seat is arranged on the tail end of each push-pull rod. A mounting bracket is arranged on the front end of the casing body. The mounting bracket is provided with a circular hole. A lens is arranged in the circular hole. A camera is arranged behind the lens. The output end of the camera is connected with an image acquisition module through a data line. The image acquisition module is connected with the measurement display. The measurement display is arranged on the other end of the casing body. According to the invention, people can quickly judge andevaluate different displays, so as to select a suitable display.