Recurrent pleural effusion is caused by failure to control the primary disease, such as hypoproteinemia, constrictive pericarditis, infective pleurisy, and lung malignancy. Pleural effusion is caused by excessive production of fluid in the pleural cavity and decreased absorption due to various reasons. Pathologic accumulation of fluid in the pleural cavity and compression of lung tissue may lead to discomfort such as chest tightness, palpitations, dyspnea, and cyanosis, in addition to the symptoms of the primary disease. Common causes of pleural effusion include hypoproteinemia due to various causes, various infectious pleurisy, constrictive pericarditis or recurrent heart failure episodes, lung malignancy, etc., which can cause recurrent pleural effusion when the primary disease cannot be effectively treated. The recurrence of pleural effusion, it is recommended to go to the regular hospital as soon as possible to symptomatic treatment and clarify the cause of the disease, for the cause of the treatment, the best results.