The invention discloses a dual-output MMC topology based on a bridge arm bifurcation structure. The dual-output MMC topology comprises three phases of bridge arms, each bridge arm is composed of an upper bridge arm and a lower bridge arm, each of the upper bridge arms and the lower bridge arms is composed of a shared bridge arm set and an independent bridge arm set, and each shared bridge arm setcomprises one sub-bridge arm, each independent bridge arm set comprises two sub-bridge arms. The MMC topology proposed by the invention has the advantages of modularity and multiple ports, can be usedfor connecting a plurality of distribution networks with the same voltage classes, can realize distribution network reconstruction, controls active and reactive power flow in the distribution network, and optimizes the flow distribution, so as to improve electric energy quality and power supply reliability. Compared with a dual-output MMC topology based on a back-to-back structure, the dual-output MMC topology based on the bridge arm bifurcation structure greatly reduces the number of sub-modules used in the topology due to the existence of the shared bridge arm sets, thereby reducing the size of the device and the cost of the system.