To determine whether a newborn baby has flatulence, it is mainly based on the symptoms of the abdomen, the mental state, and the condition of breastfeeding. 1. Symptoms of the abdomen: By looking with the eyes and touching with the hands, if the newborn’s intestinal flatulence is more serious, it will lead to swelling of the stomach, and the skin of the stomach will tend to be more bright, and the stomach will feel hard when touching. If there is no intestinal distention, the stomach will be soft when touched and pressed down. 2. Mental state: newborns with flatulence often cause physical discomfort, resulting in poor mental state, such as depression or persistent crying. 3. Breastfeeding: When a newborn has flatulence, it will directly affect the appetite, resulting in loss of appetite, and may eat little or no milk. If your newborn is experiencing any of these symptoms, he or she may be suffering from flatulence, which requires prompt medical attention.