At present, the massive access of microgrid has already had an important impact on the safe operation of distribution network. Based on this background, this paper proposes a bi-level energy management model for active distribution network considering microgrid access. The model includes distribution network level and microgrid level. The distribution network level is optimized from three perspectives: the lowest network loss, the highest voltage quality and the lowest power fluctuation. At the microgrid level, the lowest total cost in the operation cycle is taken as the optimization objective. By using second-order cone relaxation and linearization methods, the upper and lower models are transformed into second-order cone programming and mixed integer linear programming respectively. Finally, the simulation results of an improved IEEE-33 example show that the model can balance the interests of both distribution network and microgrid. The operation safety of distribution network is improved while the operation cost of microgrid group is reduced.