Vitamin AD supplementation for newborns is best started as early as possible after birth. According to the latest guidelines, it is now recommended to start vitamin AD supplementation for newborns as early as possible after birth to prevent diseases caused by vitamin A or D deficiency, such as night blindness and rickets. Vitamin AD is a fat-soluble vitamin and is not recommended to be taken with warm water. Vitamin AD can be taken with breast milk by squeezing it into the newborn’s mouth before breastfeeding. In addition, it is also necessary to conduct regular physical examination of the newborn, if abnormalities are found, it is necessary to consult a doctor in a timely manner, and active treatment, the condition of the newborn is changing rapidly, and need to pay attention to; for vitamin AD deficiency patients, need to follow the doctor’s instructions for vitamin AD supplementation, and can not blindly self-supplementation.