Newborn babies with milk petals in their stools can be caused by colds, indigestion, and poor diet of the breastfeeding mother. 1. Cold: When a newborn’s abdomen gets cold, it may cause them to have milk petals in their stools. The cold will speed up the gastrointestinal movement, and the milk eaten by the newborn will not be digested in time, but will be excreted through defecation, which will result in milk petals in the stool, and the frequency of newborn’s defecation will also increase. 2. indigestion: the newborn’s gastrointestinal function is not very perfect, if the newborn ate too much, the milk powder is too thick or change the type of milk powder, may also make the newborn indigestion, which caused the stool with milk petals. 3. Improper diet of breastfeeding mothers: During the breastfeeding period, mothers eat too greasy and stimulating food, which will affect the newborn through the breast milk, and will not allow the newborn to fully digest the breast milk, which will lead to milk petals in the stool. If the newborn has serious symptoms of milk petals in the stool, or the symptoms do not get better, you should go to the hospital in time for treatment.