High-quality cardiopulmonary resuscitation requirements: First, external chest cardiac compressions should be rapid and forceful, with a compression depth of 5-6 cm and a compression frequency of 100-120 compressions/min. Each compression to ensure full rebound of the thorax, as far as possible to reduce the number of compression interruptions and compression interruption duration, each compression interruption duration of no more than 10 seconds. Compression interruptions include removal of airway foreign bodies, airway opening, artificial respiration, tracheal intubation, electric defibrillation, checking the effect of resuscitation, and replacement compressions. Up to 2 minutes of compressions, i.e., 5 cycles, should be replaced when the compressions or when the pressor is fatigued, in order to avoid the fatigue of the pressor and the decline in the quality of compressions. Second, artificial respiration each blowing time to more than one second, the tidal volume should not be too large, can see the obvious thoracic undulation can be, to avoid hyperventilation.