Emergency immobilization is usually applied to patients with fractures, which not only cause pain, but also lead to re-injury. For example, if a limb fracture is not immobilized, the patient will often experience pain and even further injury. If the patient’s injury position is the spine, including the cervical spine, it is especially necessary to immobilize, if not immobilized, it may lead to paralysis, increasing the risk of the patient’s condition, and at the same time increase the difficulty of the patient’s subsequent treatment, so first aid immobilization in the fracture of the more widely used.