In order to solve the problem of traditional Chinese painting image color processing technology, meet the needs of digital museum construction, make up for the vacancy of color processing technology in traditional Chinese painting, and improve people’s understanding of traditional Chinese painting. Through the analysis of the experiment, the experimental equipment adopts Epson v940 scanner, the color depth is 24 bit true color, and the scanning accuracy is 1200dpi. The main simulation methods of Chinese painting are systematically and deeply studied, from which the characteristics of Chinese painting are analyzed. Through a large number of formula analysis, it is found that the application of computer image processing technology in Chinese painting is very successful, which promotes the development of the digital museum and improves people’s understanding and liking of Chinese painting.