Newborn farts can be caused by flatulence, or by improper diet, excessive bowel movement and other factors. 1. Flatulence: When food produces a lot of gas after excessive fermentation in the stomach, flatulence will occur, leading to excessive farts in newborns. 2. Improper diet: If the newborn is breastfed and the mother often eats a lot of starchy food (which produces a lot of gas and can easily lead to farting), the newborn will be affected through breastfeeding, leading to excessive farting in the newborn as well. 3. Fast intestinal peristalsis: If the intestinal peristalsis is too fast, the gas in the gastrointestinal tract can be excreted to a greater extent, leading to farting in newborns. It is important to note that if the newborn is not feeling well, he should seek medical treatment in time to prevent the condition from worsening, which is unfavorable to the body.