Bone is composed of organic and inorganic components. Organic components include collagen fibers and amorphous matrix, while inorganic components are mainly calcium salts, also known as bone salts. The process of bone formation is based on membranous bone or cartilage, with calcium salts deposited in the center to form an ossification point, from which new bone is produced around it, covered with periosteum, and the newly produced bone continuously destroys the original bone-like material, forming a marrow cavity and gradually changing its shape. In children, the organic component is higher than the inorganic component, and the calcium ion level often fluctuates, so children’s bones are prone to deformation, bending and green branch fractures. 1. Newborn to one year old. If there are no obvious symptoms of calcium deficiency, such as slow hair growth, rickets, congenital bone curvature and other diseases, breast-fed, the mother can supplement calcium acetate or calcium hydrogen phosphate, etc., and supplemented with osteotriol gel pills (according to the instructions) can be, it is not recommended to give the child directly. If formula-fed, normal children, just need more sunshine is enough, if the child with disease, in the year twice to supplement calcium and vitamin D can, but must be to the regular hospital after seeing, follow the doctor’s instructions to take can. 2. One year old and above to eight years old. If there are no obvious symptoms of calcium deficiency, such as slow hair growth, rickets, congenital bone curvature and other diseases, more food with high calcium content that can be easily absorbed can be added, without oral or injectable calcium, some parents go to the hospital to do the relevant examination, which is necessary, but blind calcium supplementation is not desirable, if there are obvious symptoms of calcium deficiency, such as fractures, growing pains, rickets, rib exostosis, internal and external knee joint, etc., can If there are obvious symptoms of calcium deficiency, such as fracture, growing pains, rickets, rib cage, internal and external knee rolling, etc., direct supplementation of calcium acetate or calcium hydrogen phosphate, etc., supplemented with osteotriol pills (taken according to the instructions) is sufficient. Supplementation twice a year for one month each time. 3.Over eight years old to adults. Due to the improvement of people’s living standards, puffed fried food and carbonated drinks have become one of the essential foods in the lives of older children, and excessive intake can lead to a large loss of calcium ions in children’s bones, thus increasing the risk of pediatric bone disease and fractures. It is sufficient to pay attention to the diet and increase the amount of foods with high calcium content that can be easily absorbed, without oral or injectable calcium supplements. For fractures, growing pains and related diseases, medication needs to be administered under the guidance of a regular hospital doctor.