Three-month-old baby constipation without poop may be related to indigestion and constipation, which can be regulated using general treatment or medication. The digestive system of three-month-old babies is still not well developed, when the mother’s diet contains more fat and protein, it can enter the baby’s body through breast milk, making the baby indigestion. Or formula feeding with more milk powder can also cause indigestion in babies. At this time, the mother’s diet needs to be light and easy to digest, or feed water to the baby to increase intestinal and stool moisture, which can help the baby to defecate. When the baby appears constipation, you can take probiotics, such as bacillus subtilis bifidus, bifidobacteria to regulate intestinal flora, oral such as compound pepsin to promote gastrointestinal peristalsis, to help food digestion. When the baby constipation for a long time, dry stools, difficult to discharge from the body, you can use the appropriate use of Keserol lubrication of the intestinal tract, to help laxative. Cause three months baby not poop there are other reasons such as congenital hypothyroidism, congenital megacolon and other diseases, it is recommended to consult a doctor in a timely manner, to clarify the cause of the disease, and active treatment. All of the above medications should be used under the guidance of a physician, and should not be used on their own.