Babies waking up all the time at night are considered to be related to environmental factors, dietary factors, calcium deficiency and other factors. 1. Environmental factors, if the environment is too noisy or the ambient temperature changes during the nighttime sleep, it may cause the baby to sleep uneasily and wake up all the time at night. 2. Dietary factors, if the usual amount of feeding is not enough, the baby is hungry during the night sleep, may also appear to sleep always wake up symptoms. 3. Calcium deficiency, if the baby’s body lacks vitamin D and calcium deficiency may lead to increased neural excitability, sleep always wake up at night symptoms, but also may appear sweating, pillow baldness and other conditions. Babies always wake up at night, there may be other reasons, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.