Children need about 250mg of calcium per day, and most children with a normal diet have enough to meet their body’s needs during growth and development, so they generally do not need calcium supplements, and only need to routinely take vitamin D supplements and insist on more outdoor activities in the sun. For infants, breastfeeding should be actively promoted and complementary foods should be added on time, such as eggs, meat and shrimp to meet the body’s developmental needs. In addition, if it is the sequelae of rickets, there is generally no need for drug treatment, but to strengthen physical exercise, active and passive rehabilitation of the bones will be greatly improved.