Night baby crying and not sleep, may be environmental factors, baby hunger, stool, colic, etc., need to target to take general treatment, physical therapy, etc.. 1. environmental factors: if the baby sleep environment is noisy, will affect the baby to sleep, resulting in baby crying, must improve the sleep environment, keep the baby’s sleep environment quiet. 2. Baby hunger: the baby is relatively small, if the hunger can not be well expressed, it will be expressed through crying, must pay attention to feed the baby in time. 3. urination and defecation: after the baby urinates and defecates, if the diaper is not changed in time, because of the discomfort, it will cause crying, pay attention to change the diaper in time. 4. colic: baby if violent crying, often because of colic caused by parents can give the baby to do exhaust manipulation and airplane hold, generally can be relieved, part of the baby can use the navel sticker, help relieve. Baby crying at night does not sleep, if the symptoms continue to be unrelieved, should promptly go to the hospital to find out the cause of targeted treatment or treatment.