There are many kinds of traumas, and the classification of traumas is based on different situations. 1. Traumas can be classified according to the cause of trauma, such as bruises, burns, crush injuries, impact injuries, etc. 2. If the trauma is caused by two or more causes at the same time, and the trauma is caused by different causes, it is called compound injury, such as burn injury combined with fracture, etc. 2. According to the part of the injury or the injured organ, it can be classified into cranial injury, chest and abdominal injury, liver and spleen rupture, fracture, etc. If multiple organs and parts are injured at the same time, it is also called multiple trauma.3. Classify according to the severity of the patient’s injury.4. Classify according to the integrity of the skin or superficial mucosa of the injured part, and divide into closed trauma and open injury. Patients must go to hospital for treatment in time once trauma occurs.