The child’s crying for no reason is considered to be related to physiological factors, but may also be the presence of indigestion, acute gastroenteritis and other diseases. 1. Physiological factors, if the child is hungry, sleepy or urinated, the child may appear to cry for no reason. 2. indigestion, the child crying for no reason may be related to indigestion, if too much food at once, the abdominal pressure is increased, this symptom may appear. 3. Acute gastroenteritis, some children have acute gastroenteritis after the increase in intestinal inflammation, may irritate the intestinal mucosa, producing abdominal pain, so it will lead to children crying for no reason. Children crying for no reason, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.