Functional and organic causes are the main reasons for children to fall asleep and wake up crying. For functional reasons, it is commonly caused by the child being frightened during the day or the sleep environment not being quiet enough at night. For causes of organic pathologic changes, some children have fever and cough after or during an infection, as well as other related symptoms. It is also possible that the child develops gastrointestinal pathology, which causes stomach discomfort or abdominal pain will also wake up crying, common in diarrhea, constipation or defecation difficulties, etc., and its need to make a differential diagnosis.