Mixed-feeding babies are prone to indigestion, which can lead to diarrhea in mild cases and severe constipation and diarrhea in severe cases, so try to choose a single feeding method. Mixed-feeding babies may also lead to vomiting, frothy stools and other symptoms of indigestion in babies will appear foul-smelling stools. The foul smell of the stool means that there is undigested protein in the intestines, so the formula should be diluted properly, not to eat very much protein, and the symptoms of foul-smelling stools will naturally heal. If the baby’s stool is creamy or even has milk flaps, it means that there is too much fat in the food fed, and the amount of these fats is too much to be digested, and then excreted from the intestines, this phenomenon suggests that parents should reduce the intake of fatty foods. The reason why mixed-feeding babies may cause indigestion is because the nutritional composition of breast milk and formula is different, which can easily lead to indigestion symptoms in children, so reasonable adjustments should be made, and if necessary, you can choose to consume stomachic tablets to strengthen the conditioning. So for young babies should choose a single feeding method, which is beneficial to the fragile gastrointestinal tract of newborns.