With the development of power spot market under the background of the goals of carbon peak and carbon neutrality, renewable energy represented by wind power and photovoltaic will participate in the spot market. Due to the volatility and uncertainty of renewable energy, it is necessary to improve the multi benefits of the market on the premise of ensuring the flexibility of power grid regulation through the coordination operation of demand side response and energy storage. Therefore, this paper researches the clearing optimization strategy of power spot market based on multi-party benefit improvement and carbon peak and carbon neutrality. Firstly, considering the benefits of all parties involved in the day ahead clearing stage, the regulation requirements of different power grid peak valley are included in the bidding process. A spot trading system considering energy supply, energy storage, grid and demand side revenue distribution is proposed. Then, In order to ensure the low-carbon operation of the system, the clearing model of power spot market based on the coordination and optimization of energy supply, energy storage, grid and demand side benefits is established based on carbon emission trading on the energy supply side. Finally, case study is performed to verify validity and superiority of the model.