Newborns have immature digestive functions, grow and develop relatively quickly, and require more calories and nutrients, so once they are not fed or cared for properly, diarrhea can easily occur. The symptoms of diarrhea in newborns are different for different reasons: a. Symptoms of non-infectious diarrhea 1. Symptoms of diarrhea caused by physiological dilute stool: breastfed babies generally have more bowel movements and can have 7-8 or even 10-12 bowel movements per day, and the stools are all relatively dilute. If the baby is in good spirits, eating milk is also large, weight growth is normal, parents do not have to worry. 2, improper feeding caused by diarrhea symptoms: stool containing foam, with sour taste or rotten, sometimes mixed with indigestible particles and mucus. Often accompanied by vomiting, crying. 3, diarrhea symptoms caused by allergy to milk powder: after feeding milk or milk powder to the baby, the baby has intractable, non-infectious diarrhea for more than 2 weeks, stools mixed with mucus and blood, accompanied by skin eczema, hives, asthma and other symptoms. Second, the symptoms of diarrhea from extra-intestinal infection 1, diarrhea symptoms caused by suffering from a cold: the baby has a cold, cough, fever, and has diarrhea. Diarrhea symptoms caused by intestinal infection: 2, diarrhea symptoms caused by viral or bacterial infection: the baby’s stool is yellow thin watery or egg flower soup-like, large amount, no pus and blood, this time should be considered rotavirus infection. If the stool contains mucus pus blood, should be considered bacterial enteritis, often combined with vomiting, fever. 3, the most serious to be counted neonatal epidemic diarrhea: it often occurs in the neonatal ward in the hospital, the germs passed through the mother’s birth canal to the newborn, and then by the hands of health care workers to spread the bacteria. The disease has a short incubation period and heavy symptoms, starting with anorexia, vomiting and bloating, followed by diarrhea with yellow-green watery stools, with tapping sounds and fishy odor, up to 10 times a day, and accompanied by symptoms of dehydration.