Twelve-year-old children walking a lot after the outside of the ankle pain, may be too much exercise, calcium deficiency, osteoarthritis, etc., through attention to rest, calcium, physical therapy and other ways of treatment. 1. Excessive exercise: twelve-year-old children walking more than the outside of the ankle pain, may be more exercise than the body load, it is recommended to pay attention to rest, do not overdo the exercise, appropriate local hot compresses, can alleviate the symptoms. 2. Calcium deficiency: twelve-year-old children walking more pain outside the ankle, may be calcium deficiency caused by growing pains, it is recommended to follow the doctor’s advice to take calcium supplements such as calcium gluconate, etc., and pay attention to a variety of daily nutritional intake, in order to promote the absorption and utilization of calcium. 3. Osteoarthritis: twelve-year-old children walking more persistent pain outside the ankle, it is recommended to improve the X-ray and other related examinations, a clear diagnosis, you can through the ibuprofen and other non-steroidal anti-inflammatory analgesic drugs, ultrasound, hot compresses and other ways to treat. There are many possible causes of ankle pain in children, it is recommended to improve the examination, active treatment, daily attention should be paid to try to avoid overload exercise, and do not blindly use drugs.