Medically a child under 28 days old is called a newborn. Most newborns have diarrhea, most likely due to indigestion or intestinal infections. But for a small percentage of newborns diarrhea is a very dangerous thing, such as necrotizing small bowel colitis. Neonatal diarrhea is the most common intestinal disease during the neonatal period, also known as neonatal dyspepsia and neonatal enteritis, mostly caused by improper feeding and wounded food type to come; there are also some milk protein allergies. Therefore, more attention should be paid to the regulation of newborn feeding. After the mediation of feeding, the symptoms still do not ease must be sent to the hospital for treatment as soon as possible.