Hangers wear ingested seat belts and buckle to the seat belt D-ring to secure the hanging utensils at the top of the lifting container of the self-walking vehicle. To the top of the container four-corner hanging appliances fixed well, respectively, hooked on the owner of the crane car, hanging personnel from the car back to the ground, the seat belt off the hook, hanging line under the personnel clearance, container lifting, the container lifting. After about 30 cm high, first pause, confirm that the crane crane condition is stable and no abnormality, the container is hoisted to the designated place to put and the same protective measures to remove the lifting device from the container.