The industrialization standard of European and American film industry is mature. Behind the perfect production industry，there is a set of profit-making system，including presale，financing，copyright market，Sub Ledger mechanism，etc. The most important link is the completion guarantee mode，which links the capital and producers，promotes the capital operation and production standards，and effectively manages and controls the risks to guarantee the development of the European and American film industry. In this essay，the development background and business process of European and American film completion guarantee mode are analyzed，and the role of this mode in film industry financing and risk management is summarized.