The pre-hospital emergency is to give some first aid measures to patients with acute and serious illnesses before they are sent to the hospital, commonly used are: 1, The patient should be transported with a spinal board or a wooden board behind the spine to avoid displacement of the spine, which can lead to secondary injury and serious spinal cord nerve compression, resulting in serious sequelae. 4. Splint external fixation, usually for patients with limb fractures, is given at the scene to stabilize the fracture end and then transferred, which can avoid the displacement of the fracture end and the possible stabbing of blood vessels and nerves that may lead to serious sequelae.