In order to promote the application of mechanical automation in CNC machine tools and improve the competitiveness of enterprises'products,the development status of CNC machine tools is analyzed,and the difference between CNC machine tools and traditional machine tools is pointed out,that is,CNC machine tools are more accurate,more precise and lower in cost Intelligent CNC machine tools can make production safer,with stable production quality,reduced machine tool and tool losses,adjustable work rhythm,stable and reliable operation,convenient maintenance and other characteristics.They can meet the production needs of different types of products at the same time.Users can quickly adjust the product structure and expand production capacity,greatly reducing the labor intensity of workers.In the future,China's manufacturing industry will be constantly upgraded to achieve industrial automation and intelligent development