Abstract: Bi-level cooperative optimal scheduling method of multi-microgrid and distribution system considering energy sharing is proposed. Firstly,the cooperative interaction mechanism of multi-microgrid（MMG）system and the distribution system is analyzed,and a bi-level optimization framework of MMG and distribution system（including energy sharing）is established. Secondly,considering the energy sharing between microgrids（MG）,the cost minimization model of lower layer MMG system which takes into account the network fee is established. Then,considering the operation economy and net load peak-valley difference,the multi-objective optimization model of upper distribution system is established,and the multi-objective model transformation and solution method are proposed. Finally,an example analysis is carried out based on MATLAB software. It is concluded that the proposed optimization method can effectively reduce the operating cost of the multi-microgrid system and the distribution system while alleviating the peak-valley difference of net load in distribution system,which verifies the effectiveness of the proposed optimal scheduling method.