Supplier design collaboration based on digital mock up is an important feature of the globalization and digitization of modern aircraft development. Supplier design collaboration based on digital mock up can organize all design engineers in different locations and time around the world, make them working in a unified design environment. It can overcome the shortcomings of traditional aircraft development, and improve the efficiency of aircraft development and shorten the development time greatly. This article introduces the advantages of supplier design collaboration based on digital mock up, focuses on the classification, general requirements, process and data management of supplier design collaboration based on digital mock up. It provides relevant reference and help for supplier design collaboration of digital mock up.