If a newborn baby always cries and does not sleep, it is mainly considered to be caused by the following reasons: First, it is caused by abdominal pain, often due to gastrointestinal dysfunction, which causes accelerated intestinal peristalsis, resulting in abdominal pain in the child, followed by crying and not sleeping. In addition to crying and restlessness, the child’s bowel movements are significantly accelerated, and some children also have diarrhea, while others may be constipated. For this situation, parents can give their children probiotics to deal with, commonly used probiotics can be used small Pepcid, Mamma, Siliancon and so on. Secondly, as a result of vitamin D deficiency rickets, the child will have occipital baldness, more head sweating, chicken chest, rib beads and so on, in addition to crying and restlessness. Some children have severe hand and foot twitching, which is a more serious situation. In this case, you can test your child’s blood vitamin D and calcium level, if it is low, you should give your child vitamin D and calcium supplements in time.