There are many reasons for children’s calf pain, such as trauma, calcium deficiency, growing pains and so on. 1. Trauma: small children like to run around, if accidentally fall, hit the calf will cause pain, pay attention to observe whether it affects the child’s activities or walking, if so, it is recommended to consult a doctor in a timely manner. 2. Calcium deficiency: If the child lacks nutrition, such as calcium deficiency will lead to pain in the child’s calves, because the child’s growth and development is faster than that of adults, the daily diet is not easy to meet the child’s need for calcium, which will cause pain in the calves. 3. Growing pains: Growing pains usually occur in children between the ages of 3 and 12 years old, and will appear irregular calf pain, manifested as muscle pain, because the legs are growing, so it will lead to leg pain. If the pain is obvious, it is recommended to go to the hospital for examination in time.