If a patient is found to have suddenly fainted and collapsed, first let the patient lie down, and then immediately find someone to call 120 to request medical personnel to come to help. If there is no consciousness, touch the carotid artery while observing whether the patient has thoracic heaving, if both are absent, it proves that breathing and heartbeat have stopped, and the patient should be given CPR immediately. CPR includes chest compressions and artificial respiration, generally after 30 chest compressions, and then quickly give the patient two artificial respiration. The patient’s heartbeat and respiration are restored after five rounds of operation, and the patient’s heartbeat and respiration are quickly determined. If the patient’s heartbeat and breathing are there, you can finger pinch the patient’s nose under the point of the human middle, which has the effect of opening the body and promoting awakening, and at the same time, pay attention to keep the patient warm and wait for medical personnel to come to the rescue.