The reasons why babies do not like to sleep include physiological factors, such as adverse environmental influences or hunger, etc.; pathological factors include calcium or vitamin D deficiency, digestive disorders and so on. 1. Physiological factors: Because the baby’s sleeping environment temperature is too high or too low, the environment is too humid, the room is not quiet, too much light, hunger or play time is too long, the nervous system is too excited, etc., may affect the baby’s normal sleep, and show symptoms of do not like to sleep. 2. Pathological factors: (1) Calcium or vitamin D deficiency: due to the baby’s prolonged intake of calcium or vitamin D insufficiency, parents do not regularly give the baby extra supplement, etc., resulting in long-term calcium or vitamin D deficiency, interfering with normal sleep, showing the above symptoms. (2) Digestive disorders: As babies are in the stage of growth and development, a variety of adverse factors may lead to digestive disorders, such as catching a cold, adding supplemental food is unreasonable, etc., the baby shows abdominal distension, abdominal pain and other discomforts, which affects the sleep and manifests the above symptoms. Parents are advised to find out the specific causes and implement symptomatic adjustment or treatment under the guidance of doctors as soon as possible.