Calcium supplementation is necessary for infants, pregnant women, nursing mothers, middle-aged and elderly people, etc. Calcium supplementation plays a great role in physical development and bone strength. It is best to provide children with calcium-rich foods such as fish, shrimp skin, kelp and ribs soup in time by eating some bone soup, and eat more foods rich in vitamin D when calcium is lacking, such as pig liver, sheep liver and beef liver, to supplement calcium. Regular calcium supplementation is good for your health, mainly food supplement.