Answer: Intestinal gas is a perfectly normal occurrence in children and in adults. (We grown-ups pass, on average, 2 liters of gas a day, and it can be as high as 8 liters a day.) In most cases, it isn't a cause for concern, unless your child is experiencing more than minor discomfort and complaining a lot.Typically, a child with gas has bloating, pain, or burning in his belly, and frequent burping or flatulence. He may also feel a bit of nausea. It most likely only happens once in a while nothing to worry about that.. reasons to gas are Eating a lot of high-fiber foods, like cereal, or fatty foods, like French fries,Ingesting a particular protein lie cows milk in formula or breast milk. eating cauliflower, broccoli, beans children develop gas Drinking a lot of juice and drinking a lot of soda can develop gas so aviod these foods ... give plenty amount of water to your baby. you can also try fennel tea .