A preliminary research on color simulation of stars was done to overcome the limitation of lack of spectrum information of stars in a star simulator nowadays. First of all, choose the suitable star catalog, decide the star number which would be researched on color simulation, and find the color index of the star. Simultaneously, deduce the functional relationship between the color index and the color temperature. And the color temperature of the star was decided. Then, calculate the radiation property of the blackbody under the color temperature. After that, according to the theory of colourometry, integrate the stimulus values of the blackbody and normalize the results to get the corresponding colourometry coordinates. Therefore, the color simulation of stars is implemented. Finally, explain the limitation of the research program. The experimental results show the feasibility of color simulation of stars.