With the continuous development of the global economy and the improvement of people's living standards,cars have become an indispensable means of transportation in people's daily lives.As an important pil-lar of the national economy,the development level of the automobile manufacturing industry is directly related to the country's economic strength and competitiveness.Mechanical processing technology,as one of the core tech-nologies of automobile manufacturing,its innovation and application are of great significance for improving the o-verall level of the automobile manufacturing industry.Based on this,this article focuses on mechanical process-ing technology,analyzes the importance of its application in the automotive manufacturing industry,and propo-ses effective ways to apply it in practice,aiming to provide reference for future research by relevant personnel.