Special lifting tool for steel containment vessel of nuclear power station and lifting method

The invention relates to a special lifting tool for a steel containment vessel of a nuclear power station and a lifting method. A special lifting tool for the steel containment vessel of the nuclear power station comprises a sling transition beam, at least eight riggings, a lifting beam and at least eight adjustable devices, wherein the sling transition beam is fixedly connected with the lifting beam through the rigging; and the adjustable devices are symmetrically distributed at the top end of the lifting beam. In the lifting method of the steel containment vessel of the nuclear power station, a special tool is applied as transition connection between the lifting tool of a crane and the components of the steel containment vessel of nuclear power station; before lifting, load test is carried out on the sling transition beam, riggings, the lifting beam, the adjustable devices and transition connecting tools; during lifting, the length of each adjustable device is adjusted according to the detected stress data