Calcium supplement for 2-year-old baby can choose liquid calcium or granules is better, such as calcium gluconate oral liquid or calcium carbonate D3 granules. 2-year-old baby is in the development stage, muscle, bone calcium demand is relatively large, if the child has a calcium deficiency, you can use calcium gluconate oral liquid or calcium carbonate D3 granules under the guidance of the doctor for calcium supplementation, need to pay attention to the side effects of the drug, such as nausea, loss of appetite, constipation and other uncomfortable symptoms. It is recommended to go to the hospital to check whether there is a calcium deficiency before calcium supplementation, and can not be supplemented arbitrarily, if there is no calcium deficiency, there is no need for additional supplementation, pay attention to the diet, to ensure balanced nutrition, and appropriate to eat more food with high calcium content, and follow the doctor’s instructions. All of the above medications should be used under the guidance of a doctor, avoid self-medication.