aking micro CNC milling machine as the object of study, systematic design of its appearance was carried out. By using multiple image scale method and clustering analysis method, product styling features and representation semantics affecting user psychological feelings were extracted,so client’s emotional need was achieved structured expression on image level. The best modeling elements were extracted to model.Using Meng-Spencer Mido evaluation formula, through data collection and collation, the “harmonious beauty” of the color matching scheme was calculated.Ultimately,a multi index fuzzy comprehensive evaluation for the overall program was made to further ensure the feasibility of the scheme.