Unexplained ankle tendon pain, may be caused by the following reasons: 1, may be due to bad posture, such as some patients are used to tiptoe in sitting and standing on their heels, or in the process of sleep will be placed in the foot in a very uncomfortable position, resulting in the tendons around the ankle joint is in a state of tension for a long time, the patient would like to move, will be felt here due to fatigue of tendons and produce pain; 2, May be caused by the patient’s high mental tension, for example, the patient in a high degree of mental tension, exuberance, will unconsciously make the whole body muscles to maintain tension and fix a certain posture, a long time may cause excessive fatigue of the ankle tendons around the ankle joint, the patient relaxes and then suddenly feel the pain; 3, it may be due to the patient’s long-term wear of high-heeled shoes caused by the patient’s long-term wearing high-heeled shoes or other uncomfortable shoes, can lead to the ankle joint tendons in a state of tension for a long time. Patients wearing high-heeled shoes or other uncomfortable shoes for a long time can cause the ankle tendons to be overstretched repeatedly, and then produce minor injuries resulting in tendon pain here; 4, it may also be due to the lack of muscle strength of the calf and foot, patients do not often exercise to cause the above parts of the muscle strength is insufficient in the process of walking may be due to the lack of muscle strength and lead to the ankle joint instability and then produce tendon pain.