Rickets in children is associated with vitamin D deficiency, which can lead to disorders of calcium and phosphorus metabolism in children, resulting in the failure of normal deposition of calcium salts, thus causing bone deformities. The main sources of vitamin D in infants and children are vitamin D from the mother, fetal transit food and skin light synthesis, with skin light synthesis of vitamin D being the main source. If there is insufficient sunlight exposure, insufficient vitamin D intake and chronic wasting diseases, the absorption of vitamin D can be affected. The clinical manifestations of patients include neurological and psychiatric symptoms, such as excessive sweating, irritability, easily startled, easily irritated, night crying, occipital baldness, and skeletal changes such as enlarged head fontanelle, delayed closure, widened cranial suture, hand and foot bracelets, O-leg, as well as string rib and scoliosis.