The heel is swollen for more reasons, which may be related to heel soft tissue inflammation, acute trauma, Achilles tendonitis and so on. 1. Inflammation of the soft tissues of the heel: the patient may not pay attention to rest when he himself has inflammation of the heel pad. Still walking or exercising for a long time, which aggravates the inflammation of the soft tissue of the heel, leading to obvious swelling of the heel. 2. Acute trauma: some patients may suffer from compression fracture of the heel bone or serious damage to the soft tissues around the heel bone due to jumping from a high place, etc., resulting in very serious swelling of the heel. 3. Achilles tendonitis: During strenuous exercise such as walking, running, jumping, etc., the Achilles tendon and the surrounding tendon membrane are damaged and aseptic inflammation occurs. In some patients, fibrous tears occur, subcutaneous tissue congestion, edema, etc., resulting in heel swelling. Heel swelling, it is recommended to consult a doctor in time, follow the doctor’s instructions for further examination, with the help of the doctor to clarify the cause, and targeted treatment or therapy.