The medial ankle pain can be caused by the following reasons: first, tendinitis of the medial tendon of the ankle joint, there can be pain in the medial tendon of the ankle joint, which can be accompanied by the formation of fluid and local swelling, then it is necessary to conduct early physical examination, early physiotherapy and oral medication and closed treatment. Secondly, when gout involves the ankle joint, there can be pain and swelling, and it can be accompanied by redness of the skin and the formation of gout stones. Thirdly, cysts of the ankle joint or cysts of the tendon sheath around the ankle joint may cause pain on the inside of the ankle joint, accompanied by local swelling and cystic swelling can be palpated.