Nine-month-old baby constipation can be improved by adjusting the diet, massage and belly rubbing, medication. 1. Adjust the diet: regular quantitative to the baby to drink water, to the baby to eat more rich in dietary fiber vegetable puree and fruit puree, small meals, do not give the baby too much to eat. 2. Massage and knead the abdomen: you can give the baby massage, clockwise knead the abdomen, promote the baby’s gastrointestinal peristalsis, promote the discharge of stools. 3. medication: you can feed the baby probiotics and other drugs, such as bifidobacterium bifidum triple live bacteria, bacillus subtilis two live bacteria, etc., to regulate intestinal flora, promote food digestion; for constipation is serious, you can external use of the drug Kaiser Permanente to stimulate defecation. The above drugs must be used in strict accordance with medical advice under the guidance of a doctor.