Abstract: The high proportion of wind power and other renewable energy connected to the grid is an important feature to achieve the "double carbon" goal of energy and power, but its anti peak shaving characteristics increase the peak shaving burden of the power system, which is not conducive to the low-carbon transformation of the power system. In the process of accelerating the transformation from planned dispatching to market dispatching, how to improve the peak shaving flexibility of power system on the premise of market-oriented operation has become an urgent problem to be solved. First, this paper makes full use of the excellent peak shaving characteristics of carbon capture power plant and user side resources, and fully discusses the feasibility of both of them participating in the peak shaving auxiliary service market. Therefore, a flexible peak shaving strategy is proposed, in which both sides of the source load participate in the joint clearing of the energy peak shaving market. Secondly, based on the cost characteristics of peak shaving of carbon capture power plant, the pricing strategy of peak shaving of carbon capture power plant is formulated by using group decision-making analytic hierarchy process (AHP), and the comprehensive quotation mechanism of power market is formed by using externalization internality theory and environmental index coefficient to improve the market transaction principle, transaction process and transaction settlement method. Finally, the market clearing model aiming at the optimal comprehensive cost of the system is constructed, and the clearing results are solved by the method of pre-clearing and re-clearing. The example simulation shows that the model proposed in this paper could effectively meet the peak shaving demand of the system and reduce carbon emission.