Pain in the Achilles tendon area of the heel after running is considered to be related to Achilles tendonitis, Achilles tendon injury and other causes. Depending on the cause, general treatment, physical therapy, medication, surgery and other methods can be used. 1. Achilles tendonitis: Achilles tendonitis is the result of repeated strenuous stretching of the Achilles tendon, which causes inflammation and pain, swelling and stiffness in the Achilles tendon area, and is usually aggravated after activities. Patients should pay attention to rest and avoid excessive exercise. Non-steroidal anti-inflammatory drugs such as diclofenac sodium can be applied for treatment. It can also be treated with heat therapy, shock wave, electrotherapy, ultrasound and other methods. If conservative treatment is ineffective, surgical treatment such as Achilles tendon cleaning and repair surgery can be performed. 2. Achilles tendon injury: If you run too strenuously or improperly, it may cause injury to the Achilles tendon, thus causing pain in the Achilles tendon area. After the injury, pay attention to rest, you can apply cold compress to the affected area. Diclofenac sodium can also be applied to relieve pain. If the Achilles tendon is mildly injured, just pay attention to rest. If there is a serious injury or even rupture of the Achilles tendon, surgery is needed. When there is pain in the Achilles tendon area of the heel after running, it is recommended to go to the hospital to further identify the cause of the disease, and then targeted treatment. The above drugs need to be applied under the guidance of a physician.