The baby sleeps over and over at night, considered as environmental influence, lack of vitamin D or calcium, indigestion, etc., can cause the baby to sleep over and over. 1. Environmental impact: If the baby sleeps in a room with a poor environment, such as noisy sound, too bright light, high indoor temperature, etc., can affect the baby’s sleep quality, resulting in the baby can not enter a deep sleep, thus rolling over. 2. Lack of vitamin D or calcium: if the baby body lacks vitamin D and calcium, can lead to the baby brain nerve excitability increase, so the night sleep will appear sleep not solid, love to cry, love sweating and other phenomena. 3. indigestion: in addition to the baby’s diet before bedtime is not appropriate, resulting in the intake of food can not be effectively digested, thus causing indigestion, can also lead to abdominal distension, abdominal pain and other discomforts, thus causing sleep is not solid, tossing and turning. In addition, colds, hunger, etc. can cause the baby to sleep at night, so you need to go to the hospital and identify the cause of the disease, in order to be able to effectively deal with.