The invention discloses a method for calculating optimal power flow of an AC/DC (alternating current/direct current) power distribution network in a meter and VSC (voltage source converter) control mode. On the basis of control of active management equipment of an AC power distribution network, VSC operation control parameters and active management equipment are jointly taken as decision variableson the basis of a steady-state operation model of a VSC station, AC/DC network loss of accurate active loss of a meter and the converter station is taken as a target function, the optimal power flowmathematical model containing the multiport flexible DC interconnected AC power distribution network is constructed while safe operation constraint conditions of the AC/DC power distribution network and the converter station are met, and the model is established and resolved with an AC/DC alternate iterative power flow calculation method and a dual particle swarm algorithm. After VSC control parameter optimization is considered, AC/DC network loss is effectively reduced, and the method has good practicability and better astringency.