There are many reasons for children’s heel pain, such as common trauma, Achilles tendonitis, calcium deficiency and so on. 1. Trauma: children are more active, if in the process of playing and sports, accidentally bumped into the heel, can lead to heel local soft tissue damage or bone damage, and redness, swelling and pain and other symptoms. 2. Achilles tendonitis: Secondly, when children run and jump and other strenuous exercise, the Achilles tendon and the surrounding tendon membrane are damaged, causing part of the fibers to be torn or calcified, which can lead to the appearance of Achilles tendonitis. Achilles tendonitis can lead to skin congestion, edema and pain in the heel area. 3. Calcium deficiency: Children are in a stage of physical development, if they do not pay attention to a reasonable diet, it can lead to calcium deficiency. Calcium is one of the important substances for the development of bones in the body, and a lack of calcium can affect the development of bones, leading to pain in the heel area. In addition, pediatric juvenile idiopathic arthritis and other diseases can also cause heel pain, it is recommended to go to the hospital in a timely manner, improve the examination to determine the cause of the disease, and then give targeted treatment or therapy.