If pleural effusion wants to be absorbed quickly, it needs to be treated actively according to the cause of the disease, including drug treatment, surgical treatment, etc., and the use of drugs should follow the doctor’s instructions. Pleural effusion is a common cause, such as tuberculosis infection, bacterial infection, tumor-induced pleural fluid. 1. Mycobacterium tuberculosis infection: regular anti-tuberculosis treatment, such as taking streptomycin, rifampicin and so on. Closed drainage of pleural cavity is feasible if the amount of fluid is large. 2. Bacterial infection: according to the results of pleural fluid and drug sensitivity test, use sensitive antibiotics, such as cefuroxime. If purulent pleural effusion is not easy to pump out, continuous closed drainage is feasible to drain the fluid and prevent lung atrophy. 3. Tumor: according to the condition with radiotherapy, chemotherapy drugs such as cisplatin. The rapid increase of malignant pleural fluid will cause compression symptoms, such as the emergence of dyspnea, etc., need to puncture as soon as possible to extract fluid. It is recommended that patients with pleural effusion go to the hospital in time, clarify the cause of the disease, and actively treat it.