It is false that a single herb discharges pleural effusion. Pleural effusion arises from a variety of causes, and should be treated differently according to different causes, leading to pleural effusion, such as congestive heart failure, tuberculosis, and so on. 1. Congestive heart failure: When congestive heart failure occurs, it can lead to pleural effusion due to sodium and water retention and increased blood volume. For treatment, diuretics, such as hydrochlorothiazide; digitalis drugs, such as digoxin; beta-blockers, such as metoprolol; angiotensin-converting enzyme inhibitors, such as captopril, can be used for treatment. 2. Tuberculosis: When tuberculosis invades the pleura in patients with tuberculosis, it can continuously stimulate the pleura to produce pleural fluid (fluid that stays in the chest cavity), thus pleural effusion occurs, which is caused by tuberculosis combined with tuberculous pleurisy. The treatment should be active anti-tuberculosis treatment, and the drugs that can be used are isoniazid, rifampicin, pyrazinamide, ethambutol, streptomycin and so on. In addition, pyothorax and lung cancer combined with pleural metastasis can also lead to pleural effusion, with different causes and different treatments, which should be promptly consulted and disposed of by a doctor.