The main symptoms of rickets in babies include atypical manifestations such as excessive sweating and irritability and typical changes in the bones in advanced stages. There are individual differences in the specific situation. Rickets is a chronic disease mainly characterized by bone lesions caused by abnormal calcium and phosphorus metabolism and ossification disorder in children. The initial symptoms of rickets are atypical, mainly manifesting excessive sweating, irritability, and waking up at night. If the disease is not treated in time, typical skeletal changes such as softening of the skull, square skull, chicken chest, X-shaped legs or O-shaped legs will gradually appear. If children with vitamin D deficiency rickets have tetany, hypocalcemia should be considered, and they need to go to the hospital in time, and follow the doctor’s instructions to stop the alarm and supplement calcium and vitamin D treatment. Daily need to strengthen the baby physical exercise, more sunshine. 6 months of infants avoid direct exposure to the sun.