With the explosive growth of user-side distributed energy, the number of prosumers with dual attributes of sources and loads is gradually increasing, and begin to participate in the power market as an emerging subject. Aiming at the clearing problem of oligopoly power market with prosumers,model is proposed based on the Cournot model. Furthermore,a prosumer market transaction a hybrid robust and stochastic method are used to deal with the uncertainty of renewable energy output within prosumers, so that a consumer robust and stochastic market transaction model is established. Finally, the effectiveness of the proposed model and method is verified on the IEEE-39 bus system, and the market power of producers and consumers is evaluated.