The occurrence of infantile rickets is mostly due to two reasons: 1, after pregnancy or delivery of the baby is calcium deficiency, calcium deficiency will lead to the occurrence of rickets. 2, there is also a special kind of rickets, such as familial rickets may be due to inborn genetic factors, resulting in familial calcium and phosphorus metabolism abnormality, the emergence of familial calcium and phosphorus metabolism abnormality, will lead to the human body’s skeletal dysplasia and the occurrence of Rickets in infancy. After the above summary rickets is mostly caused by abnormal calcium and phosphorus metabolism, there are inborn factors, there may also be acquired factors.