With the continuous development of modern social economy and technology, the pace of industrialization in China is also accelerating. Traditional mechanical design and manufacturing technology has been difficult to meet the needs of modern industrial production. Therefore, in order to promote the further development of modern industry, we must improve the mechanical design and manufacturing technology. Based on this background, modern mechanical design and manufacturing and automation technology appeared. Based on the development status of modern work, this paper mainly analyzes the concept and development trend of mechanical design and manufacturing and automation technology.