A rotor hanging tool for hanging a rotor, said rotor being provided with a rotor main body extending in an axial direction, a pair of annular support rings respectively disposed at a first end and a second end of the rotor main body at an interval in the axial direction and provided outside the rotor main body in a radial direction, and a pair of seal members disposed on an inner peripheral surface of the support ring in a state where a space is open between the seal member and an outer peripheral surface of the rotor main body, characterized in that said rotor hanging tool comprises: a beam configured to extend in parallel to the axial direction while being disposed above the rotor main body; a pair of ring support portions disposed at an interval in the axial direction, connected to the beam, and configured to be attached to and detached from the support ring; a pair of rotor support portions disposed at an interval in the axial direction, connected to the beam, configured to be attached to and detached from the rotor main body at positions different from the ring support portions in the axial direction, and configured to respectively support the rotor main body from below; and a vertical position adjustment unit configured to adjust a position of each of the rotor support portions in a vertical direction with respect to the beam. said rotor being provided with a rotor main body extending in an axial direction, a pair of annular support rings respectively disposed at a first end and a second end of the rotor main body at an interval in the axial direction and provided outside the rotor main body in a radial direction, and a pair of seal members disposed on an inner peripheral surface of the support ring in a state where a space is open between the seal member and an outer peripheral surface of the rotor main body, characterized in that said rotor hanging tool comprises: a beam configured to extend in parallel to the axial direction while being disposed above the rotor main body; a pair of ring support portions disposed at an interval in the axial direction, connected to the beam, and configured to be attached to and detached from the support ring; a pair of rotor support portions disposed at an interval in the axial direction, connected to the beam, configured to be attached to and detached from the rotor main body at positions different from the ring support portions in the axial direction, and configured to respectively support the rotor main body from below; and a vertical position adjustment unit configured to adjust a position of each of the rotor support portions in a vertical direction with respect to the beam. a beam configured to extend in parallel to the axial direction while being disposed above the rotor main body; a pair of ring support portions disposed at an interval in the axial direction, connected to the beam, and configured to be attached to and detached from the support ring; a pair of rotor support portions disposed at an interval in the axial direction, connected to the beam, configured to be attached to and detached from the rotor main body at positions different from the ring support portions in the axial direction, and configured to respectively support the rotor main body from below; and a vertical position adjustment unit configured to adjust a position of each of the rotor support portions in a vertical direction with respect to the beam.