Pleural effusion is the accumulation of fluid in the chest cavity, and the common treatment methods include general treatment, drug treatment and surgical treatment. 1. General treatment: If the amount of pleural effusion is relatively small and the patient does not have symptoms such as chest tightness and shortness of breath, the pleural effusion can be absorbed by itself, it is recommended to take the initiative to adjust the living habits and change the diet, such as paying attention to rest in normal times, and focusing on a light diet. 2. Drug therapy: common diseases causing pleural effusion include pneumonia, tuberculosis, lung tumor, heart failure, immune system diseases, etc. Drug therapy for the cause of the disease can achieve better therapeutic effect. Commonly used drugs include ceftazidime, rifampicin, isoniazid, glucocorticoids, sacubitril valsartan and so on, and should follow the doctor’s instructions for medication. 3. Surgery: If the patient has more pleural effusion, closed pleural drainage can be performed to drain the effusion and reduce the pressure of the effusion on lung tissue. If the patient’s primary disease is lung tumor, chronic pyothorax, etc., surgical treatment can be carried out after full evaluation by physicians. It is recommended that patients with pleural effusion should seek timely medical examination to clarify the cause of the disease and be treated accordingly under the guidance of the doctor.