Abstract: The energy consumption of the community occupies an important position in the total social energy consumption. The distributed photovoltaic deployment rate in the community is gradually increasing. However, the resources of a single community is limited, and photovoltaic consumption ability is insufficient. Based on this, a distributionally robust optimal dispatch model for multi-community photovoltaic and energy storage joint system is proposed. The energy sharing and joint demand response among communities are considered in this model. The ambiguity set of photovoltaic output probability distribution is described by Wasserstein metric, and the minimum operation cost of the system is solved on this basis. Finally, the simulation results show that energy sharing and joint demand response improve the economy of multi-community operation. The model also realizes the coordination of the robustness and the economy for the system.