Newborns are easily frightened, this situation is considered to be the newborn’s nervous system is not mature enough, do not worry, usually when the child is a little bit older can be improved. In addition, usually pay attention to supplement vitamin D, add some calcium. Vitamin D can promote calcium absorption, prevent vitamin D deficiency rickets, pay attention to more sunshine, also helps to prevent this disease. If there is vitamin D deficiency, there may be easy to startle at night, limb shaking, restlessness, difficulty in falling asleep, at the same time, the mother should pay attention to the diet, do not eat some spicy and stimulating food, do not eat cold food, it will easily lead to the baby’s abdomen is uncomfortable, easy to lead to the baby is not easy to fall asleep at night, resulting in easy to be frightened.