Abstract: Aiming at the problem that the individual rationality of the agent in the integrated energy system is not fully considered, and the power system pays more and more attention to the consumption of renewable energy and the reduction of carbon emissions, this paper proposes an optimal operation strategy of wind-solar-CHP multi-agent energy system considering the bargaining power. In this paper, the integrated energy system is divided into wind, photovoltaic and CHP agents, and their cooperative operation model is constructed, and hydrogen production technology and ladder-type carbon trading mechanism are added to the CHP agent. Then, according to Nash bargaining theory, a wind-solar-CHP multi-agent cooperative operation model is established. Due to the nonconvexity of the proposed cooperative operation model, it is decomposed into the system operation cost minimization problem（P1） and the transaction payment problem（P2）. In P2, a bargaining power model considering economic and environmental gains is proposed. Each agent realizes the fair distribution of income according to its own bargaining power. Finally, in order to protect the privacy of cooperation, the alternating direction method of multiplier（ADMM） is used to solve P1 and P2. The results show that the optimal operation strategy of wind-solar-CHP considering bargaining power can not only realize the fair distribution of cooperative benefits, but also effectively alleviate the problems of wind curtailment, solar power curtailment and carbon emissions. In addition, the power-to-hydrogen technology can better promote the low-carbon economic operation of the system than the power-to-gas technology.