If the cause of ankle joint effusion is different, the treatment methods will be different, as follows: 1. Reduce weight-bearing activities: If ankle joint effusion is caused by degenerative osteoarthritis, attention must be paid to reducing weight-bearing activities, such as reducing up and down stairs, hiking and long-distance walking and running, so as to reduce the wear and tear of joint cartilage and the leakage of synovial fluid, thus reducing swelling. 2. Thrombolysis: If the swelling of the ankle joint is caused by venous thrombosis in the lower extremities, anticoagulation therapy should be carried out and, if necessary, thrombolysis may be needed to unblock the blood vessels so that blood can flow back and the swelling can disappear. In addition, local hot compresses and physiotherapy can be applied, because hot compresses and physiotherapy can improve the blood circulation of the ankle joint, speed up the remission of sterile inflammation, and can reduce the exudation of synovial fluid, thus reducing the accumulation of fluid in the ankle joint. In this case, it is recommended to consult a hospital specialist as soon as possible.