The common reasons why children often have sore feet include: 1, growing pains, children in the process of growth and development, the bones grow rapidly, but the nerves, tendons, muscles around the limbs will grow relatively slow, resulting in pulling, causing soreness, pain, is a very normal performance, parents do not have to worry too much. 2, metabolite accumulation, children’s activity is relatively large, often run around, so in the usual daily life The metabolites in the tissue will be a lot, after all, the metabolic rate of children is relatively low, so can not quickly eliminate the lactic acid produced, thus causing the accumulation of acidic metabolites in the feet, appearing feet often acid symptoms. 3, related to walking posture, many children walking twisted around, some even rely on the strength of the ankle, the sole of the foot to support the whole body, so that the pressure on the feet is relatively large, the symptoms of acid.