A normal human ankle tendon sheath, there are many in the ankle area, for example, in the lateral side can have fibularis longus shortus tendon sheath, in the posterior side of the Achilles tendon tendon sheath, in the medial side of the deltoid tendon tendon sheath, in the anterior side of the anterior tibialis tendon sheath. As the human ankle joint needs frequent weight-bearing flexion and extension activities, or prolonged exposure to cold, the tendon sheath is prone to thickening, inflammatory exudation, local inflammatory changes, so that the patient suffers from aseptic inflammation of the ankle area, the patient will feel chronic, persistent tingling in the ankle area, with mild redness and swelling, localized tenderness on palpation, and it affects the movement of the ankle joints of the patient. In treatment, symptomatic treatment can be given, the use of closed injections or the application of small needle prying loosening, can relieve the patient’s clinical symptoms.