Abstract: The progress and deficiencies in interface aesthetics research and aesthetics evaluation were analyzed.By integrating the theories and methods of kansei engineering,graphics,systems engineering,psychophysics and other disciplines,a new interface aesthetic evaluation method was proposed.In this paper,firstly,the perceptual image structure of interface aesthetics was analyzed,and it was found that balance,proportion,simplicity and echo were key potential factors influencing user aesthetic experience.Twelve aesthetic indexes and the evaluation system of interface aesthetic were built.Secondly,gray relational analysis was applied to analyze the aesthetic dominance orders of the design cases,and then aesthetics comprehensive evaluations were enforced.Finally,a prototype system of interface aesthetics evaluation was developed;and corresponding function modules including information encoding,aesthetics calculation and design cases comprehensive evaluation were introduced.The comparative experiment result through the normal paired comparison method in psychophysics verified that the system and method proposed in the paper were feasible and effective.