The life expectancy of patients after pulmonary effusion extraction depends mainly on the specific etiology, which varies with the specific prognosis. Pulmonary fluid is clinically known as pleural effusion, and most of the diseases leading to pleural effusion are benign, with tuberculous pleurisy being the most common, and also include other systemic diseases, such as effusion caused by liver and kidney diseases. This kind of pleural effusion will disappear after curing the original disease, which does not affect the life of the patient and is no different from normal people. For some malignant pleural effusions, the most common causes are lung cancer as well as metastatic cancer, and how long a cancerous pleural effusion can live is mainly related to the treatment method. In the case of lung adenocarcinoma, with positive targeted gene test and oral targeted drug treatment after pleural fluid extraction, some patients can survive for many years. Some patients with advanced tumors, who have developed systemic metastases, the goal of pleural fluid aspiration is only to relieve symptoms, and their survival time may be shortened. In addition, after the drainage tube is left in place after extraction of pleural effusion, it needs to be fixed with the skin to prevent the drainage tube from falling off during the activity, while the patient should pay attention to protect the drainage tube when turning over to avoid the drainage tube from falling off.