This paper studies the development model and collaborative system design of the digitization of cultural industry. From the concept and connotation of digitization of the cultural industry, the development mode of the foreign digitization of cultural industry can be analyzed, the current development difficulties faced by China can be concluded; An efficient development model and a collaborative system adaptive to the development of China's digitization of cultural industry is represented; A +N , that is, a multi-party cooperative interest community composed of government-led elite alliance, cultural enterprises, group intelligence individuals and other partners; Besides, this paper expounds the "Five-in-O A synergistic guarantee system designed with the participation of the government and society is taking shape, so as to escort the healthy and sustainable development of digital and cultural industries.