This paper establishes a three-stage game model by considering products’green degree and govern-ment subsidies． The first stage is that the government determines the subsidies coefficient; the second stage is that manufacturers with various green strategies in supply chains determine their own products’green degree; The third stage is that manufacturers in supply chains determine their own products’prices． Further，a nu-merical case is presented to test the effects of the variation of different factors． The results provide insights into the decision-making of governments and companies．