Combined with TRIZ and Brain Storming, this study set up an innovation problem solving process. Through the analysis of the customer’s problems about the designed objects or products, the corresponding 39 engineering parameters and the product engineering characteristics which should be improved are found out. Through the contradiction table or the inventive principle corresponding with a single engineering parameter, 40 inventive principles will be solved. With the combination of the cases about Inventive Principles, the designers can be provided with a new thinking. With the application of Brain Storming, all the feasible ideas are integrated and then the relevant project can be presented. Providing that such process is applied to the design of products, this can become a reference to the development of new products. Taking an example of the stick, this study adopts the inventive process to improve the design of a stick according to its drawbacks. Therefore, the usability of products will be promoted.