Loss of consciousness is the first step to determine whether the patient has signs of life, such as the presence of carotid pulsation and respiration, if these two exist, there is not much to worry about, keep the airway open, maintain good body temperature and position, and prevent vomiting from blocking the airway. For comatose patients or patients with loss of consciousness, this method can be used. As for trying to wake him up, it is safer to call 120 or take him to the hospital immediately by other means. Ancient methods such as pressing the human middle pinch and rubbing are not advocated, or should keep the airway open is the most critical.