Heel swelling may be caused by acute injury, Achilles tendonitis, blood reflux disorder, gout and so on. 1. Acute injury: for example, during strenuous exercise or heavy physical labor, it may lead to acute injury to the heel area, causing symptoms of swelling and pain in the heel. 2. Achilles tendonitis: usually caused by chronic injuries or repeated minor injuries, it can lead to aseptic inflammation of the heel, which can cause symptoms of swelling and pain in the heel. 3. Obstructed blood return: For example, if the patient has a previous severe blunt soft tissue contusion here, the destruction of blood vessels may lead to blood stagnation, which may easily lead to the symptoms of swollen heels. 4. Gout: this is a metabolic disease, due to poor metabolism or excessive production of uric acid in the body, resulting in the precipitation of uric acid crystals, deposited in the joints and the surrounding soft tissues, thus causing local non-specific inflammation, manifested as swelling, pain, and increased skin temperature. Heel swelling, should pay attention to rest and should go to the regular hospital for appropriate examination and treatment.