The American Heart Association in 2015 for the 2010 CPR guidelines made an update, put forward the concept of high-quality cardiopulmonary resuscitation, a total of five points, one, the rate of external cardiac compression should be 100-120 times per minute / minute; two, the depth of powerful compression is 5-6 cm; three, infants and children at least 1/3 of the anterior and posterior diameter of the thorax three, to avoid hyperventilation, to see the patient’s thorax and abdomen thoracic slightly rise and fall; four, to allow the thorax to be sufficiently rebound Department of pressure, the gap in the pressure can not be leaned against the patient’s chest wall, and five, to minimize the time of the interruption of the press, as far as possible, to make the interruption of the time of the compression is less than five seconds.