The main manifestation of open injury is that the patient’s skin integrity is damaged, and there can be subcutaneous, muscular, skeletal, and even visceral injuries. The principles of open injury management are 5: 1. assess the patient’s injury, clearly understand whether the patient’s kidney, spleen, liver and lung have been damaged. 2. apply local pressure to the injury and stop bleeding thoroughly to prevent hemorrhagic shock. 3. place the patient in a flat position and carry him to the emergency room for wound treatment. 4. establish intravenous access in a timely manner and actively rehydrate the patient to prevent loss of body fluids. 5, Perform local wound debridement as well as dressing change treatment, and intermittent suturing can be performed if the condition is good.