Ankle tendon pain may be caused by exercise fatigue, ankle cold and other physiological reasons, may also be the ankle joint degenerative disease, sciatic nerve compression and other pathological factors. 1. Physiological reasons: the ankle is the human ankle joint, the ankle joint part has more tendons, ligaments and other soft tissue structures walking, long time running, climbing, may cause the ankle joint part of the soft tissue fatigue or spasms, the ankle tendon pain symptoms; in addition the ankle part of the long term exposure, resulting in the ankle joint is cold, may also appear the above symptoms. 2. Pathological factors: when the ankle joint undergoes degenerative diseases, it may cause pathological changes such as bony encumbrances and cartilage degeneration in the ankle joint, resulting in the increase of impact and friction in the joint, which may cause the compensation of the soft tissues around the joint, and the symptom of ankle tendon pain may also appear. These symptoms may also occur when the sciatic nerve is overstimulated due to various reasons, such as pyriformis syndrome and sciatic neuritis. The symptoms of ankle tenderness alone may not be able to accurately determine the cause, but need to be combined with the characteristics of the medical history and other test results to make an accurate judgment, it is recommended to clarify the cause of the disease under the guidance of a doctor, and standardized treatment.