Two months old baby only fart not stool, consider may be a normal phenomenon, may also be the existence of functional constipation problem, you can give the baby massage abdomen, drink more water, oral medication. Two months old baby only fart not stool problem, consider may be a normal phenomenon, because at this time the baby may appear to save the problem of the stomach, the digestive system is not well developed, individual differences are large, can be manifested in the above situation. But there may also be functional constipation, parents can use both hands to massage the abdomen, from top to bottom massage, each massage 5 ~ 10 minutes or so, clockwise massage, can effectively promote gastrointestinal peristalsis to help defecation. At the same time, we should also pay attention to appropriate drinking warm water, which is conducive to relieving the symptoms of constipation. At the same time, you can give such as compound pepsin powder and other digestive aid, bacillus subtilis bacillus bifidus preparation and other probiotics to regulate. If necessary, you can give corkscrew to help defecation. For two-month-old babies who continue to have no bowel movements, it is recommended to consult a pediatrician for treatment. The above medications should be used in accordance with medical advice.