Abstract: In order to realize the autonomous economic control of the AC-DC hybrid micro-grid cluster in the island mode, this paper proposed a distributed control strategy based on the discrete consensus algorithm. The control strategy includes two levels of sub-microgrid control and microgrid cluster control. In the sub-microgrid control level, by introducing the secondary adjustment items of cost, frequency, voltage and reactive power distribution in the traditional economic droop control, the autonomous stability and economic power distribution of the sub-microgrid were achieved. In the microgrid cluster control level, by constructing the local control strategy of the converter station based on the deviation of cost increment, and further introducing the secondary adjustment item based on discrete consensus algorithm, the economic power distribution among different sub-microgrids was realized. The two-layer control strategy cooperated with each other to realize the hierarchical-distributed autonomous economic control of the AC-DC hybrid microgrid group. Finally, based on the simulation results of the AC-DC hybrid microgrid cluster model, the effectiveness of the proposed method was verified.