The purpose of this study is to understand the relevant theory of creative thinking, and then apply the example design to verify its results. In addition, the differences in the design process are discussed. Differences in designer ideas will influence the results of a product design idea, so there are various ways to evaluate the design. However, if the creative output, can take into account the quality, then the follow-up evaluation, will be more effective. Therefore, this study applies systematic creative thinking mode to practical design of suitcase shape. Systematic creative thinking can quickly generate design ideas, and good ideas can also be obtained through the evaluation of experts with different expertise.