A child’s lack of bowel movement for two days may be related to insufficient intake, irrational dietary structure, intestinal obstruction and other reasons. 1. Physiological reasons: If the child’s intake is insufficient because of the hot weather, poor appetite, etc., resulting in a low number of bowel movements, it is generally normal. 2. Dietary structure is unreasonable: children recently picky eating intake of vegetables or water is too little, resulting in less dietary fiber, can cause too dry stools, constipation. You can give your child more fresh fruits and warm water to relieve the symptoms. 3. Intestinal obstruction: the child may have intussusception, which is mostly seen in children under 2 years old. Due to intestinal underdevelopment, the mesentery enters the intestinal lumen, causing intestinal obstruction, which results in the phenomenon of no bowel movement. Prompt medical attention is needed to identify the cause of the problem and, if necessary, surgical treatment. If your child has not had a bowel movement for two days, it is recommended that you seek prompt medical attention for further examination, to identify the cause with the help of your doctor, and to carry out targeted treatment or therapy.