CPR refers to cardiopulmonary resuscitation, which can significantly shorten the duration of cardiac fibrillation and turn fine fibrillation into coarse fibrillation. Effective CPR can turn cardiac fibrillation into a normal ventricular rate, but CPR treatment must be effective. The patient should be evaluated first, and CPR should be performed when the patient is determined to be in ventricular fibrillation. Chest compressions should be performed first, taking the midpoint of the double nipple line to perform compressions, with the depth of the compressions at 5-6 cm, and the frequency of the compressions at 100-120 times per minute. After the compressions, the airway is opened, and the mouth is cleared of secretions, and then the patient is given artificial ventilation until a defibrillator comes to the patient’s side, and then defibrillation is performed continuously. .