Three-year-old baby calcium supplement can be in through the food supplement, can also be under the guidance of the doctor supplement calcium carbonate, calcium lactate and calcium gluconate, etc., the specific choice of calcium supplements is to be based on the actual situation of the baby to decide, and there is no which one is the best argument. Generally three-year-old baby is the growth and development of the more important period, the baby’s demand for calcium is relatively high, if the lack of calcium, may cause slow growth, and even lead to rickets and bone deformities. You can let your baby eat more calcium-containing foods, such as milk, lean meat, eggs, tofu and so on. If the calcium deficiency is more serious, you can follow the doctor’s advice to take calcium carbonate, calcium lactate and calcium gluconate and other calcium supplements, different calcium supplements have different indications, contraindications and adverse reactions, should follow the doctor’s advice to choose the most suitable for the baby’s medication, according to the baby’s own situation to determine the specific medication, there is no uniform best calcium supplements.