Multiple injuries are a kind of common serious injuries in clinic, referring to the traumas in which two or more body parts or organs are seriously injured by one injury-causing factor, and at least one of them endangers the patient’s life. Multiple injuries are common in some accidents, such as fall from height accidents, mine collapse accidents, traffic accidents, explosive accidents and so on. However, some patients may also suffer multiple injuries when they fall on level ground or fall off a bicycle due to their physical condition. Multiple injuries are characterized by complexity, rapid change, severity, low resistance, susceptibility to infection, and high shock rate. Therefore, when diagnosing multiple injuries, it is necessary to follow the principle of preserving life first and diagnosing while treating, so as to discover the fatal and serious injuries of patients in time. It should be noted that, when an accident occurs, you can not blindly judge the condition from the symptoms alone, you should consult a doctor in time, through scientific diagnosis, treatment under the guidance of doctors, do not miss the best time for treatment.