Abstract: A method of color-real adjustment and system for adjusting a display device is disclosed, the system includes a server for outputting an image triggering signal and inputting an image extraction signal, performing a color-real process on the image extraction signal to obtain color data, transforming the color data into a color-real parameter and outputting the color-real parameter; an pattern generator for outputting an image pattern according to the image triggering signal; the display device for displaying an image corresponding according to the image pattern; an digital camera for detecting colors of the displayed image to output the image extraction signal; and a burner for storing the color-real parameter into a memory of the display device, wherein the color-real parameter matches a format of extended display identification data.