A newborn’s stomach growling and farting may be caused by lactose intolerance, gastrointestinal dysfunction, gastrointestinal infections and other factors. 1. Lactose intolerance: Lactose intolerance is mainly caused by the congenital lack of lactase enzyme and other factors, resulting in the inability of newborns to absorb lactose in formula milk and breast milk, which can lead to intestinal grumbling, and may also be accompanied by abdominal pain, gas, diarrhea performance. 2. Gastrointestinal dysfunction: due to factors such as eating a large amount of food, eating cold food, and catching cold in the abdomen, gastrointestinal dysfunction of newborns can be triggered, which can lead to flatulence, abdominal pain, diarrhea and other manifestations, and can be accompanied by stomach grumbling and farting. 3. Gastrointestinal infections: Infection with bacteria, viruses and other pathogens can trigger gastrointestinal disorders, such as viral gastroenteritis, which can lead to newborn babies to appear the performance of stomach grumbling and farting. Newborn tummy grumbling and farting, there may also be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.