If your baby has symptoms of calcium deficiency, you should go to the hospital for a blood test for trace elements to determine calcium deficiency, which can be done by supplementing vitamin D to promote calcium absorption, as well as supplementing calcium gluconate, along with eating more calcium-rich foods. The richest source of calcium is still dairy products, like a variety of dairy products such as cow’s milk, goat’s milk, etc., which is not only rich in calcium, but also calcium is easily absorbed by the body. In addition to dairy products, shrimp has a higher calcium content, but equal circumstances, the comprehensive nutritional value of milk is higher, and shrimp absorption effect as well as the absorption rate is not as good as milk. There are beans made into some soybean products can improve the calcium content, but soybeans are rich in oxalic acid, resulting in calcium absorption and utilization is relatively low, it is recommended to eat processed soybean products than native soybeans to be better. Meat and vegetables contain some calcium is relatively low, but its nutritional value is rich, so usually still have to eat. Calcium is a process, can not be fast nor fierce supplementation, the best way is to improve the usual diet with.