In the process of global economic integration development, international market competition has become increasingly intensified. Driven by technological innovation, modern enterprises rely on intelligent manufacturing and digital manufacturing to maintain their advantages in international market competition. In view of the fact that intelligence and digitalization have become the main trend in the development of manufacturing field, this paper introduces the development and transformation of intelligent manufacturing and digital manufacturing, analyzes the application of intelligent robots, automated production lines and big data in intelligent manufacturing and digital manufacturing, and points out their roles in regulating production scale, improving production costs, speeding up production efficiency, etc. in production activities of enterprises, hoping to have some inspiration for modern manufacturing industry.