The external factors of injury poisoning include the factors of injury and poisoning. The injury is mainly car accident injury or accidental injury in life, such as the collision of cars, motorcycles, electric cars, bicycles and other means of transportation, or gas explosion, electric burns, falling objects from height, mine opening and stepping explosion, gunshot wound, accident caused by airplane and train. Self-imposed factors, including accidental falls, falls, cutting injuries, which are spontaneous factors, poisoning factors including gas poisoning, industrial hazardous gas leaks, unintentional exposure to chemical toxin substances, exposure to radioactive substances, light exposure, etc. In daily life, it is important to strengthen protection and pay more attention to the occurrence of these situations in life to avoid injuries.