A one-month baby did not poop for three days, if there is no vomiting, abdominal distension, then you can temporarily observe the first, appropriate way to massage the stomach to its relief, if necessary, need to go to the hospital in a timely manner to receive a checkup, the appropriate use of some laxative medication, such as Keselen, and so on. 1. usually, the baby a few days without stool is mainly due to insufficient milk feeding or milk in the food residue content is relatively small caused by the parents can not be treated, as long as the strengthening of the daily care can be, such as appropriate clockwise massage abdomen, stimulate intestinal peristalsis, so as to promote the defecation. 2. If the baby did not poop for three days, and also accompanied by dry stools and paroxysmal crying and other problems, then it is best to go to the hospital in a timely manner for examination, and under the guidance of the doctor for medication, choose some suitable drugs, such as Keserol or lactulose, etc., to relieve constipation. In addition, if the baby is breastfed, the mother’s diet needs to be adjusted appropriately, to light, easy to digest food, drink more water, eat more fresh vegetables and fruits, eat less greasy food, such as fat meat and so on.