There are many reasons why babies always fart, such as lactose intolerance, cold abdomen, gastrointestinal and digestive disorders. 1. Lactose intolerance: some babies are lactose intolerant, whether they are breastfed or formula fed, which can lead to allergies in the digestive tract, thus triggering vomiting, diarrhea, and constant farting. 2. Cold abdomen: If you don’t pay attention to keep warm, the baby’s abdomen will get cold, which can cause the speed of intestinal peristalsis to increase, thus causing farting, diarrhea and other uncomfortable symptoms. 3. Gastrointestinal and digestive system dysfunction: In addition, after the birth of infants, their physical development has not been perfect, especially the gastrointestinal function is still relatively weak, it is easy to appear gastrointestinal and digestive system dysfunction, which can cause constipation, indigestion and other conditions, which triggered frequent farting phenomenon. When babies fart all the time, and accompanied by other discomforts, it is necessary to go to the hospital to consult and clarify the cause.