The invention relates to the technical field of power generation systems, in particular to a household grid-connected inverter control strategy based on a virtual synchronous generator. A mathematic model of the virtual synchronous generator is introduced into a grid-connected inverter, a control method of the synchronous generator is added to a control link of the grid-connected inverter, the grid-connected inverter is used for island detection, and when the power grid side breaks down, the grid-connected inverter can be quickly switched to an off-grid operation state. By the adoption of the control strategy, the household medium-small-generated output grid-connected inverter is equivalent to the synchronous generator from the aspects of input and output characteristics, and the inverter can actively participate in coordination control over the voltage and the frequency of a power system.