During the 14^th Five-Year Plan，it is necessary to promote an in-depth integration of digital technology and manufacturing industry，not only to maintain a reasonable growth rate but also to improve the quality of industry development. On the basis of analyzing the manufacturing digital transformation strategies and policies both at home and abroad，this chapter studies the impact of digital technology and digital transformation on the growth rate and development quality of the manufacturing sector，using digital technology patent as a proxy variable for technology progress and application. Results show that digital technology plays very different roles in promoting growth as for different manufacturing categories. Growth benefits are mainly concentrated in the machinery & equipment manufacturing industry，whereas the penetration into and impact on light & textile manufacturing industry and resource processing industry are insufficient. Further mechanism analysis shows that，digital technology contributes to the development quality of the manufacturing industry mainly by increasing return on equity，downsizing workforce scale，and reducing labor cost. Technology’s impact on product quality and innovation are still quite limited.