The tendon pain below the ankle bone on the inner side of the left foot may be caused by factors such as trauma or exertion, and can be treated by short-term braking, medication and physical therapy. 1. short-term braking: if caused by trauma, short-term braking should be given to rest and recuperate, control limb activities, to avoid re-injury to the injured part, generally braking for 1 to 2 weeks can make the local pain symptoms can be relieved. 2. medication: pain cream, diclofenac sodium cream or flurbiprofen gel paste and other non-steroidal topical creams can be used to reduce local inflammation and relieve the symptoms of edema and pain. 3. Physical therapy: If caused by trauma, local cold compresses can be applied within 72 hours in the acute stage to improve pain symptoms; if chronic pain is caused by excessive exercise or exertion, physical therapy methods such as hot compresses and infrared rays can be given to relieve pain and promote inflammation absorption. When there is pain in the tendon below the ankle bone on the inner side of the left foot, it is recommended to consult the hospital in time and carry out targeted treatment under the guidance of the doctor.