One and a half year old baby three days without poop may be constipation, indigestion, intestinal power is not enough to cause, can be improved through medication, massage and other ways. 1. constipation: one and a half year old children’s own digestive ability is not very perfect, easy to appear three days without poop, belongs to the constipation of a performance. First of all, you need to develop the habit of drinking more water, and secondly, you can take laxatives such as lactulose to help defecation, and if necessary, you also need to use corkscrew for treatment. 2. Indigestion: too much food intake, too much food, will lead to the child’s gastrointestinal tract dysfunction, bacterial flora is out of balance, thus appearing three days did not poop, this situation can take probiotics such as Lactobacillus acidophilus, bifidobacteria and other drugs to regulate intestinal flora, oral such as compound pepsin to help digestion, to improve. 3. Intestinal power is insufficient: in this case, the main abdominal massage treatment, put your hands on the abdomen for clockwise massage, enhance intestinal peristalsis to promote the discharge of stools. It is recommended that one and a half year old babies three days without poop timely medical attention, to avoid adverse consequences. The above drugs need to be used in accordance with medical advice.