Generally commercially available calcium supplements for children, such as calcium lactate, calcium gluconate and calcium carbonate can be consumed by babies with milk protein allergy. Calcium carbonate is recommended first because it is cheaper and has a higher calcium content. In addition to edible calcium supplements, some foods can also help babies with calcium, such as green vegetables, such as broccoli, cabbage, cabbage, etc., in addition to tofu, these foods can provide a higher utilization of calcium, and easy to absorb.