Pulmonary effusion in the elderly usually refers to pleural effusion, and the treatment is divided into the following two major areas: 1. Active treatment of the primary disease. The common ones are pulmonary tuberculosis and tuberculous pleurisy, which are mainly treated with anti-tuberculosis. Patients with heart failure, apply cardiotonic, diuretic and vasodilator drugs to correct heart failure. Patients with advanced cirrhosis are treated with liver preservation therapy, etc. For patients with malignant tumors, surgery or radiotherapy treatment of all these diseases can cause pulmonary effusion in the elderly.2. Treatment for effusion. You can take the means of thoracentesis, retain the effusion, measurement sent for examination, if the simple cause of infection, you can directly inject anti-infective drugs into the chest cavity, the direct effect on the problem areas, the effect will be faster. If the effusion rises again soon after extraction, and the laboratory results suggest the possibility of tumor, it is still the first priority to deal with the tumor, and at the same time, anti-tumor drugs can be injected into the chest cavity for targeted treatment.