The invention discloses a PFC (Power Factor Correction) control circuit and a control method thereof. The main points of the technical scheme are that the PFC control circuit includes a three-phase input transformer, a first output end of the transformer is connected with a first PFC circuit, a second output end of the transformer is connected with a second PFC circuit, the output end of the first PFC circuit and the output end of the second PFC circuit are in parallel connection, the output ends are also in parallel connection with a capacitor, the first PFC circuit and the second PFC circuit each include multiple fragile devices, and ports of the fragile devices are connected to an external circuit through jumper wire terminals. The effects are that the fragile devices are convenient to replace, the maintenance cost is reduced, and the PFC circuits are energy-saving and highly efficient.