The invention discloses a metal-sealed double-plate hydraulic-operated adjusting butterfly valve. The metal-sealed double-plate hydraulic-operated adjusting butterfly valve comprises a valve body, thevalve body is in an annular shape, two valve stems symmetrically arranged are arranged at the position, on the two sides of the middle line of the valve body, of the cross section surface of the valve body, a butterfly board is arranged on each valve stem and in a D shape, a valve seat is arranged on the inner cylindrical wall of the valve body, the sides, facing the middle line of the cross section surface of the valve body, of the two butterfly boards are in contact sealing with each other when the valve stems rotate to control contact sealing of the butterfly boards and the valve seat, a hydraulic-operated actuator is arranged on the valve body, the valve stems are hinged to the valve body, a swing rod is arranged on the end, penetrating through the valve body, of each valve stem, andthe pushing rod of the hydraulic-operated actuator is hinged to the swing rods and used for pushing the swing rods to swing so as to control the valve stems to rotate. The metal-sealed double-plate hydraulic-operated adjusting butterfly valve has the advantages that the sealing performance is high, the pressure bearing capacity is high, effort-saving and quick switching is achieved, the opening flow can be adjusted conveniently, and the erosion is reduced.