Slow growth of children may be related to genetic factors, precocious puberty, malnutrition and sleep deprivation, etc. Calcium, iron and zinc or zinc gluconate are only supplemental micronutrients, and the key is to remove the cause. 1. If the child’s parents are both behind adults of the same age in height, the child may not grow as fast or as tall. 2. If the child takes supplements or uses cosmetics or hormone-containing foods for a long time, he or she is prone to precocious puberty, which leads to premature epiphyseal closure and affects growth. 3. High oil and high sweet food will affect the child’s appetite, picky eaters for a long time will be prone to a variety of nutrient deficiencies, nutritional imbalance. If your child is deficient in calcium and zinc, you can choose calcium, iron and zinc or zinc gluconate to supplement trace elements under the guidance of a doctor. 4. Sufficient sleep and do not stay up late is to ensure that the child’s physical development is an important factor, because the human growth hormone secretion is generally 11:00 at night to 1:00 a.m., insufficient sleep is likely to make the body hormone secretion is insufficient, affecting the growth and development. Children need to identify the cause of slow growth in a timely manner, can not rely on micronutrients to promote development.