The utility model discloses an ocean energy birotor power generation facility belongs to the new forms of energy field. An ocean energy birotor power generation facility, includes upper runner and lower floor's runner, all be equipped with the impeller in upper strata runner and the lower floor's runner, the both ends of upper runner and lower floor's runner all are equipped with one way check valve, impeller in the runner of upper strata is connected with double rotor generator's external rotor through outer central siphon, impeller in lower floor's runner is connected with double rotor generator's inner rotor through interior central siphon, the impeller includes live -rollers and arc leaf frame, arc leaf frame ring winds and arranges in the outside of live -rollers, and live -rollers and arc leaf frame fixed connection, be equipped with ARC blade in the arc leaf frame, ARC blade's inboard upper end and lower extreme all are equipped with the spring groove of notch towards arc core, the spring inslot is equipped with the elastic expansion pole. It can realize using ARC blade to replace straight board blade, and the increase lifting surface area is difficult for the fracture, improves the utilization ratio of wave.