Abstract: With the deepening reform of the electricity market on the retail side, it is of great significance to explore the energy trading of microgrid cluster（MGC） for improving the economy of distribution networks. In this paper, an optimization method based on Stackelberg game for microgrid cluster was proposed. Firstly, the rolling optimization method was used to determine the energy storage scheduling and the energy trading role of microgrid operators（MGOs） in next scale. Secondly, a Stackelberg game was proposed to build the hour-ahead market between MGC operator（MGCO） and multiple MGOs. According to the relationship between optimal load demand and internal prices, the model could improve the energy interaction and the economic benefits of MGC by optimizing the internal prices in next time slot. Finally, the simulation results verify the effectiveness of the proposed method in improving the economic benefits and energy utilization rate of regional distribution network.