In general, if water enters the lungs due to swimming, bathing, etc., it can cause coughing, coughing and even aspiration pneumonia. At this time, if too much water enters the lungs, a suction machine can be taken to suck out the fluid from the lungs to relieve the symptoms of dyspnea and coughing, and antibiotics can be given to prevent bacterial infection. In addition, other pathological pulmonary edema is also seen clinically, such as pulmonary edema caused by left heart failure due to various reasons, and pulmonary effusion accompanied by coughing pink foamy sputum, which requires stabilization of vital signs, cardiotonic, diuretic, vasodilator, and activation of pulmonary blood circulation treatment, which can relieve heart failure and reduce pulmonary edema.