Calcium supplementation for children is not better, generally through food, calcium supplements, etc., need to pay attention to the appropriate supplementation, not excessive, specific advice to consult a professional dietitian, the use of medication in accordance with the doctor’s instructions. Children are in a critical period of growth and development, the demand is greater than adults, appropriate calcium intake to help maintain the normal growth of children’s bones, if the long-term lack of osteoporosis and bone fracture risk in the future. 1. Dietary sources of calcium: Milk is the main source of calcium for children and also the best source of calcium. The daily intake of milk varies according to the age of the child. In addition, beans are also rich in calcium, and green leafy vegetables also contain a certain amount of calcium, but are poorly absorbed. 2. Calcium supplements: It is recommended that calcium supplements with high calcium content, easy to absorb, good taste and convenient to consume are preferred. Currently, calcium carbonate, calcium gluconate and calcium lactate are commonly used, which need to be selected according to individual differences. It should be noted that calcium supplementation should not be overdone to avoid constipation, muscle relaxation, nausea and other discomforts. Children need to pay attention to the diversity of daily diet, do not pick and choose food. When children need medication to supplement calcium, pay attention to follow the doctor’s instructions to take.