The treatment of effusion varies depending on the specific cause of the effusion. The two most common causes of effusion are septic effusion due to local bacterial and viral infections, and local sterile effusion due to trauma and local cold. For the treatment of small amount of effusion, the following conservative treatment methods can be adopted: for aseptic effusion, local hot compress and physiotherapy can be adopted, or oral symptomatic blood-activating drugs, such as Qin Chuan Tong Palsy Tablets and Chasing Wind and Bone Capsules, which can reduce the effusion by improving the local blood circulation; of course, oral non-steroidal anti-inflammatory drugs can also be taken symptomatically, which can reduce the local aseptic inflammation by reducing the blood circulation. Of course, oral non-steroidal anti-inflammatory drugs can also be administered symptomatically, which can reduce local sterile inflammation and thus achieve the therapeutic effect of reducing effusion. For purulent effusions, symptomatic treatment with antibiotics is required. For large amounts of effusion, local puncture and aspiration can be used for symptomatic treatment.