With the rapid development of science and technology,AutoCAD technology is more and more widely used in mechanical design.Through the application of this technology,it not only helps to improve the digital level of mechanical design,but also helps to shorten the time of mechanical design,and also contributes to the improvement of design quality.Therefore,in the mechanical design,the application of the technology in mechanical design should be strengthened according to the basic principles and characteristics of AutoCAD technology,so as to achieve a more ideal design effect.This paper analyzes the basic principles and characteristics of AutoCAD technology and its significance in mechanical design,and puts forward specific application strategies,hoping that this research will be helpful to improve the level of mechanical design.