The prevention of pleural effusion, patients with pleural effusion should do a good job of prevention and care measures, usually can participate in more physical exercise, and to maintain a happy mood, these are the key to prevent pleural effusion, the general human chest cavity inside the amount of about 3 to 15ml of fluid, the role of these fluids is to allow people to breathe when the effect of lubrication, but it is worth noting that However, it is worth noting that the amount of fluid in the pleural cavity inside people’s bodies is not always fixed. In a normal person, 500 to 1000 ml of fluid is formed and absorbed every day. The patient’s pleural cavity, because of the phenomenon of injecting the venous end of the capillaries, and then absorbed, then the rest of the patient’s fluid will be recovered through the lymphatic system and then to the blood, so as to ensure that the state of filtration and absorption is in a dynamic balance. If the patient’s systemic or local lesion disrupts this dynamic balance, then the fluid in the pleural cavity will be formed too quickly or absorbed too slowly, so the pleural effusion is called pleural fluid for short. The clinical manifestations of pleural effusion are mainly coughing and chest pain, which may increase when coughing or deep breathing. Patients with pleural effusion may also experience dyspnea. When there is a small amount of effusion, the symptoms are not very obvious, and they may feel a little tightness in the chest; if there is a large amount of effusion, they will feel very obvious dyspnea at this time. The systemic symptoms of patients with pleural effusion depend mainly on the cause of pleural effusion. For the preventive measures of pleural effusion, we should pay attention to actively prevent and control the occurrence of the original disease.