The company plans to import an electric vehicle model.compared with traditional models,the lower side beam structure of electric vehicles is more complex.In this paper,the oven modification scheme is explored step by step,and the effectiveness of the scheme is verified with the help of advanced scientific and technological means such as baking simulation,and the feasibility study of the scheme is carried out.Through continuous experimentation,the scheme of optimizing the air nozzle,adding a circulation hot box and extending the oven was finally determined.