Vitamin AD is a necessary nutrient to maintain the normal physiological function of babies, of which, vitamin A can promote the visual and height development of babies, prevent iron deficiency anemia, as well as improve the immunity of babies; while vitamin D can promote calcium absorption, to ensure adequate calcium to maintain the normal development of bones and teeth, to prevent rickets, and it also has immunomodulatory functions. Now to recognize a few small misconceptions about vitamin AD. Myth 1: Only D, not A? In fact, such an idea is incorrect. The overall vitamin A intake of Chinese infants and children is generally low, and it is a moderate vitamin A deficiency country in the world. The survey results show that the overall vitamin A deficiency rate of Chinese children aged 0-6 years is 11.7%, and the subclinical deficiency rate is 39.2%, which means that more than half of the children have vitamin A deficiency problems, and the deficiency problem of small infants less than 6 months old is even more serious, nearly 80% of them have Insufficient intake of vitamin A is a problem in nearly 80% of children younger than 6 months of age. The incidence of vitamin D deficiency rickets has been reduced but still exists, so Chinese babies need vitamin A and vitamin D supplements together. Myth 2: Natural foods are safest for AD supplementation? This view is incorrect. Vitamin A and vitamin D are limited in the daily diet, such as vitamin A is rich in animal liver, whole milk, egg yolk and a few other foods, while vitamin D is mainly found in sea fish, animal liver, egg yolk and lean meat, breast milk and general dairy products have very little vitamin D, and even less in cereals and vegetables. It is difficult to obtain adequate amounts of vitamin AD through diet alone. In addition, vitamin AD is less stable and can be easily lost during the cooking process. If babies are partial or picky eaters, they are more likely to have inadequate vitamin AD supplementation. What mothers should pay attention to when choosing vitamin AD products for their babies is to choose products with scientific doses and ratios and safe production standards. In contrast, vitamin AD preparations as OTC drugs are better than cod liver oil in terms of both the effectiveness and safety of vitamin AD supplementation. Myth 3: Breast milk and formula feeding infants and toddlers do not need to supplement AD? These two views are incorrect. In fact, the content of vitamin A and vitamin D in breast milk is low and cannot meet the needs of baby’s growth and development. Although the formula contains vitamin AD, but because vitamin A and D are physicochemically very unstable substances, encounter air, high temperature, ultraviolet radiation is very easy to oxidation decomposition, and formula does not have a special protective treatment of vitamin AD, so in the process of milk powder production, transportation, processing, storage, etc. is very easy to cause vitamin AD loss, the actual content is far below the labeled amount, and The actual amount of vitamin AD is much lower than the labeled amount and cannot be completely absorbed by babies. Therefore, breast-fed and formula-fed infants and toddlers also need to rely on additional nutritional supplements to supplement vitamin AD to meet the needs of their normal body growth and development. Myth 4: Giving vitamin AD supplements to babies every day will cause poisoning? Vitamin AD supplements should be given to newborns from 15 days after birth. 1500 IU-2000 IU of vitamin A and 400 IU-800 IU of vitamin D are recommended to be taken orally every day. Therefore, as long as mothers give their babies the correct daily supplementation according to the drug instructions, it will not cause the problem of vitamin AD toxicity in babies.