Interaction between micro grid and distribution network plays an important role in improving absorptive capacity of new energy, increasing utilization ratio of distribution network assets and promoting the safe, economy, environmental operation of power system. This paper mainly researched comprehensive benefit of different interaction models of micro grid and distribution network, firstly, classic interaction ways were studied, index system of comprehensive benefit was determined, then index weight was determined by analytic hierarchy process(AHP), at last, comprehensive benefit of different interaction models were analyzed according to fuzzy comprehensive evaluation, which could offer decision-making for interaction of micro grid and distribution network.