Chest injuries are caused by direct violence against the chest, resulting in open and closed chest injuries. Among them, rib fractures, pneumothorax and hemothorax occur more often. When there is trauma to the heart area, attention should be paid to pericardial hemorrhage and pericardial tamponade. Common causes are stab wounds, blunt force, firearm injuries and car accidents. Also, chest trauma is often combined with injuries to other parts of the body such as abdominal organs. These serious injuries are life-threatening and should be treated urgently and sent to the relevant hospital for treatment and rescue. First aid methods: 1, multiple rib fractures have obvious chest wall abnormal whistling movement, with a thick dressing or first aid kit pressed on the injury, plus tape bandage fixed. 2, remove blood and mucus from the whistling tract; if necessary, perform emergency tracheal intubation or incision when conditions permit. 3, open chest injury to immediately dressing closed (do not fill the chest wound with dressings to prevent slippage). 4, chest injuries sent to the hospital emergency should be taken 30 semi-sitting position, and the upper body of the casualty cushioned with clothes, shock can be simultaneously lower limbs elevated, do not head low feet high position. 5, there are obvious inspiratory difficulties, the examination found that the trachea on one side, should think of the opposite side of the tension pneumothorax, immediately in the injured side of the anterior chest wall in the shallow second intercostal puncture in the clavicle exhaust. For safe delivery to the hospital, the puncture needle can be retained, fixed on the chest wall with hemostatic forceps and connected to the needle with a monophasic drainage tube or a rubber finger sleeve with a notch cut, and continuous exhaust.