Newborns may not sleep and cry at night due to hunger, indigestion, calcium deficiency, etc., according to the triggers can be improved through breastfeeding, the use of probiotics, vitamin D supplementation and other ways. 1. Breastfeeding: If your newborn is hungry at night, he or she will not sleep and cry, so you should breastfeed him or her in time and pat his or her back to speed up his or her sleep. 2. Use probiotics: If the newborn’s digestive system is not good, it is recommended to use probiotics (such as bifidobacteria) to regulate the stomach and stomach, and pay attention to the abdomen to keep warm. 3. Vitamin D supplementation: If your newborn is deficient in vitamin D, it is recommended to take vitamin D supplementation in time. All of the above medications should be used under the guidance of a doctor, if the newborn does not sleep at night and cries seriously, or has not been improved, it is recommended to go to the doctor in a timely manner.