In general, infants have a higher metabolic rate and more sweat glands, so babies love to sweat, which is mostly normal. In addition, some small babies are weaker and weaker, and they also sweat easily. For small infants, the most common reason for easy sweating is vitamin D deficiency. Because small infants are in the stage of growth and development, when vitamin D supplementation is insufficient, it is particularly easy to appear corresponding symptoms, such as at the same time accompanied by sleeplessness, easy to startle, occipital baldness and other manifestations of the high degree of suspicion of vitamin D insufficiency. Even according to the preventive amount of routine supplementation, because the baby’s growth and development is too fast, there will be a relative lack of vitamin D performance, then you need to increase the amount of vitamin D for the baby.