Newborns about two weeks after birth according to the specific circumstances, under the guidance of the doctor appropriate supplementation of vitamin AD or vitamin D3, in order to meet the growth and development needs. Newborns about two weeks after birth to give supplemental vitamin AD or vitamin D3 according to the specific circumstances, the specific method of supplementation should be strictly in accordance with the instructions of the doctor, strictly grasp the dose of drugs, methods and precautions, etc., to ensure that the newborn’s health. It is recommended that newborns supplementation of vitamin AD and vitamin D3, avoid taking at the same time, follow the doctor’s instructions to alternate medication, to avoid supplementation at the same time lead to excessive intake of nutrients in newborns, affecting the normal growth and development. At the same time, we should strengthen the daily care of newborns, usually more sunshine, to help nutrient absorption. If there is any discomfort, it is recommended to consult a doctor in time, so as to avoid delaying the condition.