When a drowning victim has a heartbeat but is breathing very weakly, first remove the secretions from the drowning victim’s mouth and nose, and give artificial respiration at the same time, about once every 5-6 seconds, or about 10-12 times per minute. Then, check the pulse of the drowning victim about every two minutes, and if there is still a heartbeat and a pulse, continue to give artificial respiration. When the patient has a pulse disappearance, no heartbeat, to immediately start cardiopulmonary resuscitation, that is, chest compressions, the frequency of chest compressions is 100-120 times per minute, the depth of compressions is 4-5cm, and after each compression to fully rebound, the ratio of breathing to heartbeat is 2:30.