Chest compressions for patients in cardiac and respiratory arrest are an important component of the CPR process, and high-quality chest compressions are an important key to successful CPR. In the process of performing chest compressions on adult patients, the main points include the following: firstly, the choice of compression site is the intersection of the lower part of the patient’s sternum and its bilateral nipple line, the compression technique is to overlap the palms (back) of the rescuer’s hands, fingers crossed and cocked, the root of the palm of one hand to the compression point, and to ensure that the bilateral elbow joints are perpendicular to the sternum, and the frequency of chest compressions during the operation is During the operation, the frequency of external chest compressions is controlled at 100-120 times per minute, the depth of compressions is controlled at 5-6 cm, during the operation, the rescuer quickly presses down on the chest wall with the gravity of his upper body, and as far as possible, the time of compressions and relaxation should be approximately equal. At the same time, the palm of the hand should not leave the patient’s chest wall when relaxing, but must allow the patient’s chest to rebound fully. During CPR for adult patients, compressions and ventilation should be performed in accordance with a compression to ventilation ratio of 30:2 for both single and double CPR operations. To ensure high quality chest compressions, in addition to adequate rate and magnitude of compressions, minimizing the number of interruptions and duration of compressions is also an important guarantee of high quality chest compressions.