Frequent night waking of children may be caused by physiological factors, vitamin D deficiency rickets, gastrointestinal dysfunction, colic and other reasons. 1. Physiological factors: due to the sleep environment is noisy, too cold or too hot, as well as improper feeding, wet diapers, etc., may lead to the child uncomfortable, the phenomenon of frequent night waking. 2. Vitamin D deficiency rickets: If your child suffers from vitamin D deficiency rickets, he or she may suffer from occipital baldness, easy to startle, and excessive sweating, which may lead to frequent night waking. 3. Gastrointestinal dysfunction: due to the child’s gastrointestinal dysfunction, abdominal pain, bloating, constipation or diarrhea, etc., gastrointestinal discomfort can lead to frequent night waking. 4. Colic: For children with imperfect gastrointestinal development before the age of six months, not fully digesting breast milk may put a burden on the stomach and intestines, which may lead to colic. Colic makes the child feel very uncomfortable, so frequent night waking. After eliminating physiological factors, the child should go to the hospital in time to clarify the cause of waking up at night and follow the doctor’s instructions for treatment.