Heel swelling may be caused by poor blood circulation, heel trauma, gout and other reasons. 1. Poor blood circulation: If the heel is simply swollen and there is no pain. Most of them are caused by poor circulation due to blood return obstruction caused by standing for a long time. 2. Heel trauma: it may be caused by external injuries such as direct impact of violence, which may cause pain, redness, swelling and other symptoms, and is likely to cause bruising, which leads to the phenomenon of swollen heels. 3. Gout: a joint disease caused by the deposition of monosodium urate in the body, directly related to purine metabolism disorders and (or) uric acid excretion disorders caused by hyperuricemia. When an acute attack of gout occurs, the patient may experience severe pain in the joints, with symptoms peaking within a few hours, which can also lead to swelling of the heels. Heel swelling can also be seen in other diseases, if there is no improvement after rest, it is recommended to go to the hospital in time to avoid delaying the condition.