Children's diet should be diversified. If you want to eat foods with high calcium content, you can eat tofu shrimp, fish, lean meat, beef, etc. These are very nutritious. At the same time, you should eat more vegetables and fruits, because vegetables and fruits contain a lot of vitamins. The most important thing is to make children have a balanced nutrition. Don't let children develop picky eaters or anorexia. Generally, children who are picky eaters or anorexia will not grow well, and they are likely to suffer from malnutrition.
However, because some children are not well absorbed, even if they eat more foods with high calcium content, it is useless, so they should eat something to promote calcium absorption properly. I think the best way is to take them to the hospital for examination to see the degree of calcium deficiency in the baby. Calcium can be supplemented when appropriate. If calcium deficiency is serious, it is too slow to rely on food supplement, so if necessary, they should eat some nutrients. I think that as long as they are children with normal diet, they will generally not be short of calcium. For infants and young children, milk quantity is the most important thing. Even if complementary food is added, they should drink milk every day, and the demand for milk quantity of children of different ages is different. Generally, as long as the milk quantity is reached and the food is diversified, there will be no calcium deficiency, and at the same time, they can bask in the sun more, because sunbathing can effectively promote calcium absorption, and calcium supplementation can promote bone growth.