Heel pain after running is usually caused by the following factors: Firstly, it is caused by osteoarthritis, which can lead to pain in the rear joints of the feet and the heel when there is too much running or aerobic exercise in the case of osteoarthritis. Secondly, improper exercise methods or not warming up sufficiently before exercise, resulting in tendon and ligament injuries, especially the ankle and wrist joint injuries are more obvious, the heel will also be painful when running. Thirdly, if you have a pre-existing disease such as gout, running with too much exercise and too much sweat will cause certain gouty arthritis, which will also lead to pain in the heel. Fourth, bone spurs and osteoporosis and other diseases can also lead to heel pain after running. Fifthly, lactic acid will accumulate in the body when there is too much exercise, and when lactic acid accumulates in the heel, it will also lead to heel pain.