It is normal for children to have a bowel movement once every three or four days for a long period of time if the constipation is caused by improper diet, no exercise and other factors. However, if it is caused by indigestion, gastrointestinal dysfunction and other diseases, it is abnormal. Inadequate diet, low water intake, eating too much high-fat, greasy food, or prolonged inactivity or sedentary behavior may lead to slow gastrointestinal peristalsis, resulting in bowel movements once every three or four days. If it is not accompanied by other uncomfortable symptoms, it is considered to be a normal phenomenon. Reasonable diet, drink a lot of water, as well as appropriate exercise, can relieve the symptoms of constipation, do not need to worry. Children who have bowel movements once every three or four days for a long period of time are also considered to be suffering from pathological factors, which are not normal. Common diseases include dyspepsia, gastrointestinal dysfunction, the child in addition to the above symptoms may also be accompanied by abdominal pain, loss of appetite, defecation difficulties, postprandial fullness and other symptoms. Oral medication such as Lactobacillus acidophilus complex to regulate intestinal flora and Bohol Oral Liquid to aid digestion can help. If a child has bowel movements once every three or four days, parents are advised to take the child to a regular hospital to identify the cause and treat it actively to avoid adverse consequences.