The causes of Achilles tendon pain, such as Achilles tendonitis, wearing unsuitable shoes, etc., the details are as follows: 1, Achilles tendonitis: for the most common reasons, such as frequent sports, excessive, excessive activity will cause excessive stretching of the Achilles tendon, subject to excessive load, so it will cause pain and swelling of the Achilles tendon area. 2, wearing unsuitable shoes: especially shoes with heel, if the heel is too tight, too small, when walking or sports, the heel will rub against the Achilles tendon, friction time will easily cause local pain. If the heel is too tight or too small, the heel will rub against the Achilles tendon when walking or exercising, and the friction time will easily cause inflammation of the Achilles tendon, which will also easily cause local pain. Regardless of the reason, you must reduce sports and also carry out anti-inflammatory and pain management around the Achilles tendon, for example, you can use ointment application, massage, and try to avoid wearing shoes with heel, which can eliminate the physical stimulation.