The treatment of calcium deficiency in one and a half year old babies includes dietary supplements, sunshine and medicinal supplements, etc. Calcium supplementation requires the participation of vitamin D. In most cases, simple supplementation of vitamin D can be enough, because now children’s food containing calcium is sufficient, as follows: 1, more sunshine, ultraviolet rays of sunshine, which can make the skin’s 7-dehydrocholesterol into vitamin D, prompting the intestinal absorption of calcium as well as deposition of calcium in the bones,. Its a major way. 2, give the baby supplement vitamin D, vitamin D in calcium deficiency to use a therapeutic dose, rather than the usual amount of prevention; 3, dietary supplements, the main milk, dairy products, soy products, animal food, these ingredients contain high calcium; 4, you can supplement calcium supplements, such as calcium gluconate, calcium carbonate, calcium phosphate, calcium acetate and so on, of which calcium carbonate is preferred.