In order to improve product performance and product quality, the forward design method is used for product improvement. Analyze and find out the factors affecting product quality problems and the causes of product defects, and put forward the direction and measures of product improvement through the tools and methods of forward design such as design optimization and modeling simulation, which are verified by simulation and practice and achieve good results. The results show that this method can eradicate product defects, better meet customer requirements, and improve the market share of products.