The main source of calcium for children to increase their height is calcium supplementation, and the source of calcium is mainly formula or other milk. Generally, normal breastfed infants do not need a separate calcium supplement, and there is enough calcium in breast milk for infants to absorb. For children, the intake of milk is reduced and the regular diet is increased, calcium should be taken from regular meals. Fish, shrimp, eggs and beef can be consumed on a regular basis. However, dietary intake of calcium is limited and needs to be combined with the use of calcium tablets or cod liver oil and vitamin D to promote the absorption of calcium. Specific dietary recommendations are as follows: 1, supplement sufficient minerals: calcium, phosphorus, magnesium and other minerals are the most basic elements of the skeletal structure, so calcium-rich milk, fish is the first choice for children’s diet. In addition to calcium, iron, zinc and other trace elements supplementation can not be ignored, can eat more food rich in trace elements, such as animal offal, fish, nuts, etc.; 2, to ensure the intake of fat: unless the child’s own weight has exceeded 25% of the standard weight, and reached the obesity index, should not be strictly limited fatty foods. More foods containing unsaturated fatty acids should be consumed, such as fish, eggs, etc. Do not eat too much food containing saturated fatty acids, such as cream, butter, etc.; 3. Vitamins are also particularly important for the growth and development of children, so it is important to consume more vitamin-rich foods such as vegetables and fruits in daily life.