As a clean and renewable energy source, hydropower has significant environmental benefits. The development of hydropower microgrids is one of the important paths to achieve the " double carbon" goal. Based on the output characteristics of distributed hydropower, a coordinated operation strategy multi-distributed hydropower is proposed, and a microgrid reconfiguration method and model based on this strategy is put forward. In order to avoid a large number of infeasible solutions in the optimization process, a microgrid reconfiguration algorithm based on improved particle swarm optimization is proposed. The IEEE 33-node system is selected to simulate an example, which verifies the rationality and effectiveness of the proposed method, which can effectively improve the operation economy of the microgrid.