1.5 year old baby a few days without stool may and diet irregularity, intestinal obstruction and other factors related to the daily care, medication, surgery and other aspects of improvement. 1. Irregular diet: 1.5 year old baby if the usual diet is too refined, coupled with the baby at this time of intestinal peristalsis itself is relatively slow, may lead to indigestion, constipation, caused by the stool is too dry and can not be discharged, you can increase the intake of bananas, apples and other fruits, and at the same time pay attention to the appropriate drink more water. If necessary, corkscrew can be used to help defecation. 2. Intestinal obstruction: if the baby does not stool, and also accompanied by crying, abdominal distension, abdominal pain and other conditions, it may be related to intestinal obstruction, clear need for further surgical treatment. 1.5 years old baby a few days without stool may also have other reasons, it is recommended to go to the hospital in a timely manner to carry out relevant examinations, clear cause of the disease and then actively symptomatic treatment. The above medications should be used under the guidance of a doctor.