Abstract: The integration of distributed generation, energy storage and flexible load endows the demand side with the ability of flexible regulation and control, enabling it to share electricity as a prosumer, in order to promote the optimal allocation of power resources. Therefore, this paper studies the transaction mechanism of power sharing market, and proposes a distributed trading strategy based on value recognition mechanism for power sharing at demand side, aiming to reduce the transaction cost of power market and improve the market efficiency. Firstly, the electricity sharing mode driven by marginal price is designed according to surplus theory, and the market game model is established on the basis of best reaction function, which reveals the meaningless loss caused by disorderly competition in the market. In this regard, a value recognition mechanism is proposed to improve the operation efficiency of power sharing market, and a distributed transaction strategy based on consistency algorithm is designed to realize decentralized transaction among prosumers, so as to protect the privacy of users. Finally, numerical simulation shows that the proposed trading strategy can achieve Pareto improvement of electricity sharing market and promote the optimal allocation of power resources.