A one-year-old baby three days without poop, consider indigestion, gastrointestinal dysfunction, constipation caused by, can be treated through general treatment, medication. 1. indigestion: a year-old baby three days without poop may be due to recent dietary inappropriate caused by indigestion, such as eating a lot of meat, high protein and other difficult to digest food, parents can give the baby abdominal massage, promote intestinal peristalsis, can also be taken orally, such as compound pepsin powder to help digestion. 2. Gastrointestinal dysfunction: gastrointestinal dysfunction may also make a one-year-old baby three days without stool, it is recommended that the use of bifidobacterium bifidum, method of Lactobacillus acidophilus and other probiotic medications to regulate the intestinal flora, can help to alleviate. 3. constipation: if the baby has constipation, there can be dry stools, difficult to solve. There can be three days without stool, can drink more water and eat more high-fiber foods such as celery. Lactulose and other laxatives can also be taken orally, and probiotics such as Lactobacillus acidophilus can be taken to help regulate the condition. If necessary, corkscrew can be used to help with bowel movements. If your baby continues to have no bowel movements, you should go to the hospital in time to avoid delaying your condition. The above drugs should be used according to the doctor’s advice.