Two months the baby did not poop for four days may be related to the baby’s tummy or constipation, etc., you can massage the baby’s abdomen, take medication for treatment. Saving stomach belongs to a physiological phenomenon of young children, generally because the amount of food residue is too small caused by the baby’s state of mind, eat milk normally, normal weight gain, the general situation is good, do not have to worry too much, you can give the baby a massage of the abdomen, to develop the habit of defecation. If it is caused by constipation, if it is a formula-fed baby, you can give the baby appropriate water to help defecation, if it is breastfed, the mother should eat a light diet, you can give the baby to use such as bacillus subtilis dictyostelium granules to regulate the intestinal tract, pay attention to the use of not for a long period of time, so as not to cause diarrhea and other adverse reactions. If necessary, you can use Kesler to help defecate. It is recommended that the two-month-old baby did not poop for four days to go to the hospital for a checkup to identify the cause and then targeted treatment. The above drugs should be used in accordance with medical advice.