Abstract:The new round of electric power system reform in our country has promoted the strategic cooperation process between the generator and the seller. Based on analysis of scenario conditions of cooperative game between the generator and the seller, the evolutionary game model of the cooperation between the generator and the seller is constructed based on incomplete contract, and the local equilibrium point and the dynamic evolution process of the game are discussed. Combined with the simulation results, the incentive strategy of promoting cooperation between the two parties under the condition of incomplete contract is proposed, which will provide reference for the cooperation of the power producers and the sellers under the situation of the reform of the new electric power and the reform of the state-owned enterprises.