Digital media is a new and interdisciplinary field with wide applications. It is dominated by information science and digital technology, based on mass communication theory, and guided by modern art. It is a comprehensive and cross-disciplinary subject that integrates science and art by applying information communication technology to cultural, artistic, commercial, educational and management fields. Digital media encompasses various forms such as text, images, graphics, audio, video and computer animation. Its dissemination forms and contents are digitized, that is, the process of digitization of information collection, storage, processing and distribution. In today's digital and screen-reading era, digital media is the most extensive information carrier in the information society, permeating all aspects of people's work, study and life. This work, while sorting out and elaborating on the key knowledge systems in the current fields of digital media technology, art and industry, will also take it as its responsibility to disseminate knowledge in an inspiring way. Against the grand backdrop of "Internet +" and mass innovation and entrepreneurship, it aims to contribute its humble efforts to the work of cultivating outstanding talents with a foundation in digital media knowledge and innovative qualities in numerous related industries and fields.