Abstract: In hybrid micro-grid,the frequency of AC subgrid and voltage of DC subgrid are vulnerable to power suddenly changing in operating mode switching and load fluctuations. In this paper,a novel control strategy with virtual synchronous generator（VSG）technology is proposed,which enhances the inertia of hybrid micro-grid and suppress frequency and voltage fluctuation. Meanwhile,interfacing converter（IC）exchanges power according to the needs of two subgrids. A small-signal model of IC control is established,and the transfer function between load and power supply variation and transmission power is derived. The dynamic performance of the system is analyzed,furthermore,the selection method of control parameters are determined. Finally,simulations and experiments verified that the proposed algorithm can improve the dynamic performance and stability of the hybrid micro-grid effectively.