The invention relates to the technical field of comprehensive energy, and particularly discloses a multi-port energy router design method for a microgrid, which comprises the following steps: S1, conducting topology design based on a multi-port energy router of a cascade architecture, wherein the multi-port energy router based on the cascade architecture comprises an AC / DC converter, a DC / DC converter and input and output ports; S2, determining an input port of the cascaded multi-port energy router; S3, determining an output port of the cascaded multi-port energy router; and S4, determining the bidirectional power transmission characteristic of the cascaded multi-port energy router according to the cascaded multi-port energy router. According to the energy router, bidirectional flow of power can be realized, proportional distribution of energy can be realized by the energy router, and effective technical support is provided for reasonable scheduling of energy in the AC-DC hybrid microgrid.