Patients can also take the following treatments: 1. Patients should first remove the triggering factors that cause such effusion, such as patients should not make their legs cold, do not do intense activities, do not overexert themselves, etc. 2. Patients can use a pillow to cushion their legs higher during sleep at night to facilitate reflux. 3. Patients can take oral non-steroidal drugs to reduce inflammation and pain, such as Nimesulide, ibuprofen, diclofenac sodium, etc. 4. In addition to the above-mentioned effects, these drugs also have the effect of inhibiting the generation of fluid. 4. Patients can take oral Chinese medicine tonics to treat such diseases, but before taking them, patients must ask a regular Chinese medicine practitioner to identify and treat the patient, and then prescribe the right medicine. 5. For heavy effusion, local aspiration of the effusion can be done within a short time, or synovial debridement surgery can be done in the joint cavity, etc.