With the increasing influence of social network in recent years, the film distribution mode in the film market starts to show its risk-averse characteristics. Based on the return risk brought by the market uncertainty, this paper considers the multi-stage game model of a film producer and a film distributor in the promised distribution mode. The results show that compared with the traditional distribution model, the promised distribution model sacrifices part of the producer''s expected income, but can effectively reduce its market risk. And the part of the market risk is transferred to the distributor through the promised distribution mode, but at the same time, this mode brings higher expected returns to the distributor. In addition, increased market uncertainty will undermine the producer''s operational confidence and reduce its initial effort, but will encourage the distributor to increase its effort to improve the film''s final box office performance.