Six-month-old babies can take calcium carbonate D3 granules orally if they are deficient in trace elements such as calcium, or if breastfeeding or complementary foods have not been added before, causing a deficiency of the trace element calcium. Calcium is an essential trace element in the growth process of children and is involved in the growth and development of children, and has a very good regulatory effect on the development of bones and the nervous system. In addition to oral calcium carbonate pellets, daily life should also be more sun exposure, which is conducive to the synthesis of vitamin D in the skin, more conducive to the absorption of calcium. In addition to calcium carbonate D3 pellets, you can also take oral calcium gluconate solution, because some infants and children are prone to constipation after taking calcium carbonate D3 pellets, so you can also switch to calcium gluconate solution for calcium supplementation treatment.