If blueprint of analysis objects is not exist or this blueprint complexes, previous prediction techniques for product design have a problem that do not identify the exact physical characteristics. Even if target for analysing exists, transforming into a format that is supported by the program is a troublesome. To solve these problems, this thesis explains method for easily inputting design drawing and reducing the time of product design. In determining the physical characteristics of the target, method using color information is applied with electromagnetic analysis software to enable the analysis without relation to input type. Methods using color information to identify physical characteristic include some procedures. The first step is to number each of the colors, these colors number information includes material eigenvalues corresponding to the color. Next step analysis electromagnetic phenomena according with color information.