Pleurodesis is a surgical procedure that utilizes a puncture to drain fluid from the chest cavity and can be used as a diagnostic method and treatment. The procedure is relatively simple and less harmful Thoracentesis is a common puncture technique used in clinical practice and is usually required to extract fluid when pleural effusion reaches a moderate or higher volume. In addition, if the cause of a patient’s pleural effusion is unclear, fluid aspiration by thoracentesis can also be performed to make a definitive diagnosis. After thoracentesis, patients need to pay attention to rest, prevent excessive exertion, avoid strenuous coughing and shaking, etc. They also need to go to the hospital regularly for follow-up examination to observe their physical condition.