A new hierarchical control strategy for the microgrid based on the synchronous voltage source converter on different time scales is proposed.In the primary control，the reactive power sharing problem of conventional synchronous voltage source converter control is analyzed.And the method of increasing the droop coefficient is adopted to improve the accuracy of power sharing.This method is suitable for the microgrid with various topologies involved in the local and public load.In the secondary voltage and frequency control，the calculating method of the droop curve adjustment in the secondary control is elaborated in detail，improving the voltage and frequency quality of the power system.In addition，the seamless transition control between interconnection and islanding mode and the tie-line power control between microgrid and main grid are proposed in the secondary control.And power sharing can be maintained in mode transition while the tie-line power can be controlled in the interconnection mode.Finally，the rationality of the proposed control strategy is verified by simulation in PSCAD/EMTDC software environment.