Abstract: At present, the traditional droop control strategy is used in the parallel connection of multiple converters in DC distribution system. The system shows the characteristics of low inertia and weak damping, causing the poor stability of the system. Therefore, a control strategy of analogous virtual synchronous generator used in the multi-port converter for DC micro-grid is proposed. The virtual inertia control strategy can realize the functions of droop, virtual inertia and damping characteristics. Firstly, the topology of the multi-port converter is introduced. Secondly, the control strategy is analyzed and deduced theoretically, and the control strategy block diagram is given. Thirdly, the small-signal model of the converter is established, and the stability of the converter after using analogous virtual synchronous generator control strategy is analyzed. Finally, the system simulation model is established in Matlab/Simulink, and the validity of the proposed control strategy and the correctness of the stability analysis are verified. Compared with the traditional control strategy, the proposed control strategy increases the inertia of DC distribution system and suppresses the fluctuation of DC bus voltage.