The suspender shall wear a shoulder type safety belt, buckle the safety belt to the self-propelled vehicle, and fix the lifting appliances on the top of the container by lifting from the vehicle. After the four corners of the lifting appliances on the top of the container are fixed, they shall be hooked on the main hook of the crane respectively. The suspender shall return to the ground from the vehicle, unhook the safety belt, clear the space for the personnel under the lifting route, and carry out the container lifting. After the container is lifted about 30 cm high, it shall be suspended Stop, make sure that the lifting appliance is in a stable and normal state, lift the container to a designated place and put it in place, and remove the lifting appliance from the container with the same protective measures.