Normal people have a small amount of fluid in the knee, which lubricates the cartilage in the joint. Physiologic amounts of fluid that are not accompanied by other symptoms do not need to be treated. A small amount of fluid in the knee can be eliminated by general treatment, medication, physical therapy and surgery depending on the severity of the condition. 1. General treatment: Resting the knee joint and avoiding prolonged over-exercise can reduce joint damage and cartilage wear and relieve knee effusion. 2. Medication: Oral non-steroidal anti-inflammatory drugs, such as etoricoxib and ibuprofen capsules, etc., can reduce the sterile inflammatory reaction and decrease the production of effusion. If the effusion is caused by infection, oral antibiotics, such as amoxicillin capsules to control the infection. 3. Physiotherapy: Physiotherapy such as localized electric baking can be carried out to relieve knee effusion. Under the guidance of professionals, joint function training, such as ankle pump training, can also be carried out to relieve knee effusion. 4. Surgery: For joint effusion caused by synovial hyperplasia, if conservative treatment is not effective, surgery can be performed to remove the diseased synovial tissue. If there is a small amount of fluid in the knee with uncomfortable symptoms, it is recommended to go to the hospital in time and follow the doctor’s instructions to carry out standardized treatment, do not use your own medication, so as not to cause adverse consequences.