Distribution transformer of self-organization of traditional district power grid node method, without considering the output voltage characteristics of node itself, limitations exist geometric selected area, easy to converge to local optimal solution, and put forward a kind of community network self-organization pressure node optimization distribution method, to establish community grid self-organizing pressure node distribution model, evaluating the effective coverage of district power grid, and the effective coverage as objective function, and the district power grid the organization pressure node voltage, repeated calculation, until meet the constraint. By introducing the swarm algorithm to adjust voltage output value, using the node output voltage characteristics to complete the optimal distribution, implementation of community self-organization pressure node voltage distribution is optimized. The simulation results show that the proposed method has the very high coverage of the grid.