Treatment of pleural effusion: Pleural effusion is one of the complications of advanced cancer, which often causes chest tightness and dyspnea, and even serious respiratory and circulatory disorders, which seriously affects the quality of life of patients. For a large amount of pleural effusion, our treatment is to first place a chest tube for drainage and choose a drainage tube of different caliber according to the situation and connect it to a drainage bag or a drainage bottle, the effusion will soon be drained and the chest tightness will be relieved. In order to prevent the recurrence of pleural effusion, local thermochemotherapy and thoracic injection can be performed with good effect. For moderate or small amount of pleural effusion, chest tube drainage or localized thoracentesis and aspiration can be performed as appropriate, combined with local medication, which is also very effective.