With the rapid development of modern industrial technology,CNC machining technology plays an increasingly important role in the field of automobile manufacturing.The purpose of this paper is to discuss the innovative application of CNC machining technology in the automobile manufacturing process,and analyze how it can improve production efficiency,machining accuracy and reduce costs.This paper first introduces the basic principles and characteristics of CNC machining technology,and then elaborates on the specific application of this technology in the process of auto parts manufacturing,body structure design and vehicle assembly.Through case studies,this paper demonstrates the significant advantages of CNC machining technology in improving the flexibility of automotive manufacturing,shortening the product development cycle,and enhancing market competitiveness.Finally,the paper looks forward to the future development trend of CNC machining technology and puts forward corresponding suggestions.