Abstract: The social industry is developing rapidly. New machining equipment plays an important role in promoting the development of manufacturing technology. Numerical control machine tools are produced to realize the automated processing of complex parts. It solves that some machining contour shapes are particularly complicated and difficult to control the size, and the machining accuracy is high. The CNC machine tool improves the production effi ciency and machining accuracy in the production process. Based on the practice of the next enterprise, this article talks about the analysis of special-shaped cylindrical products, fi xture design and processing methods.