Crush injury’s refer to compression of the extremities or other parts of the body, resulting in muscle swelling and/or neurological disorders in the affected body parts. Differential Diagnosis Differential Diagnosis Crush Syndrome: often seen in crush injuries caused by blunt objects such as bricks, stones, doors, windows, machines or vehicles that violently crush the hands and feet; also seen in crush injuries caused by explosive impacts, these crush injuries often injure internal organs, causing stomach bleeding, lung and liver and spleen rupture, etc. More serious crush injuries are earth, stone burial injuries, this injury, often causing a series of pathological changes in the body, and even cause kidney failure, known as “crush syndrome”. The surface of the injured part has no obvious wound, there may be bruising, edema, cyanosis, such as limb injuries, the swelling of the injury can gradually increase; less urine, panic, nausea, and even confusion; crush injuries and internal organs can cause bleeding from the stomach, liver and spleen rupture bleeding, then there can be vomiting, hemoptysis, and even shock. Laboratory tests, imaging tests, etc. can help diagnose. Treatment principles Treatment principles 1, as soon as possible to remove the factors of extrusion. 2, extrusion of the hand and toe, finger (toe) nail under the hematoma is black, can immediately cold compress with cold water to reduce bleeding and reduce pain. 3, suspected of having internal organ damage, should be closely observed for shock aura, and call the ambulance emergency. 4.The extrusion syndrome is gradually formed after the limb is buried, so it should be closely observed and sent to the hospital in time, do not ignore the severity because there is no wound at the time of injury. 5.During the transfer process, the limb activity should be reduced, and the limb should be fixed with a splint regardless of whether there is a fracture, and the limb should be exposed to the circulating air, and massage and hot compress should never be used.