1, milk is rich in nutrition and calcium, especially suitable for children. The minerals and trace elements in milk are dissolved, and the contents of various minerals, especially calcium and phosphorus, are appropriate, which is easy to digest and absorb and convenient to eat.

2. Fish and shrimp. Fish and shrimp are high in calcium, while protein is high. Eating fish and shrimp can promote children's calcium absorption. Shellfish, mussels, snails, kelp and seaweed also contain high calcium.

3. eggs. Eggs are rich in protein and calcium, which can supplement children's demand for calcium and promote physical development.

4. mushrooms. Lentinus edodes is a nutritious food with high protein, low fat, multiple vitamins and high calcium. Moreover, there is a substance in mushrooms that can be converted into vitamin D, which effectively promotes the body's absorption of calcium.

5, day lily. Daylily also contains a lot of calcium to promote the development of children's bones and teeth. In addition to calcium, day lily is also rich in phosphorus, which can strengthen the brain and improve intelligence.

6, soy products such as soybean milk, tofu, shredded tofu, etc. Other beans such as green beans, kidney beans, beans and chickpeas, and hard fruit foods such as peanuts and walnuts. It also contains a lot of calcium.