Two days of no bowel movement in a newborn baby may be caused by physiological factors, and no special intervention is needed. If it persists, it may be due to constipation, intestinal obstruction, etc., which can be treated with medication and surgery. 1. Physiological factors: babies eat too little, after digestion, liquid absorption, residue less stool reduction, for the new baby two days without defecation, such as with the previous defecation habits are not significantly different, and the baby’s mental response is good, and no obvious crying and defecation difficulties, usually considered as a normal physiological phenomenon, without special intervention. 2. Constipation: If you continue to observe that your baby has dry stools, which affects his/her bowel movements, or that he/she has not defecated for several days, which is significantly longer than his/her previous intervals of defecation, you need to pay attention to the existence of constipation, and you can soften the stools by using Kesler, if appropriate. 3. intestinal obstruction: just a month old baby two days no bowel movement, at the same time there is no anal excretion, vomiting, crying more than symptoms, consider the possible existence of intestinal obstruction, this time to be gastrointestinal decompression, intravenous supplemental nutrition, the anal tube excretion, a small amount of 2% soap and water or sales of 3% saline enema to stimulate intestinal activity, if necessary, surgical treatment. Just a month old baby two days without stool there are many other reasons, the recommendation is to seek medical attention, clear cause given targeted treatment or treatment. All of the above drugs need to be used under the guidance of a doctor, avoid self-medication.