Babies are excited and do not sleep at night, consider the following reasons while dealing with these causes: First, vitamin D deficiency rickets, children with vitamin D deficiency rickets will show signs of irritability, crying, irritability and poor sleep. If vitamin D deficiency is considered, it is recommended that the child be given appropriate supplements, and also appropriate calcium supplements according to the situation, which will help to relieve the symptoms. Second, if the baby is overly excited during the day, especially at night before bedtime, this will also affect sleep, resulting in excitement at night without sleep. For this cause, parents should pay attention to the child not to play excessively during the day, overexcited, especially at night before bedtime must let the child sleep quietly, which is conducive to night sleep.