Whether it is normal for newborns to have smelly stools should be judged in conjunction with the nature of the stool and the type of food, etc. Artificially fed newborns may have smelly stools. The feces excreted by newborns within the first 3 days, also known as meconium, is olive green, sticky and odorless. Breastfed newborns have yellow or golden yellow stools, which are usually homogeneous and creamy, or green and thin, and do not have a foul odor. Artificially fed newborns have yellowish or grayish-yellow stools, which are dry and thick, may have a foul odor, and sometimes white casein clots can be seen. If the newborn is mixed feeding, the stool is softer, yellow, add different complementary foods can become different traits, such as starch more, the odor is heavier; the first addition of vegetable puree, can be seen in green stool discharge. If your newborn’s stools are obviously foul-smelling, you need to consult a doctor and follow the doctor’s instructions for reasonable treatment.