8 months old baby diarrhea, often due to cold, improper diet, infection, etc., need to actively deal with, improve diet, appropriate warmth, supplemented by the necessary medication. 1, cold: cold can lead to baby gastrointestinal dysfunction, intestinal peristalsis increased, causing diarrhea. Measures to keep warm can be taken to relieve, such as local use of warm towels, warm water, increased clothing, etc.; 2, improper diet: 8-month-old baby’s digestive function is not perfect, if the quality of milk decreases, too much feeding, irregular feeding, easy to stimulate the baby’s intestines, thus causing indigestion, resulting in diarrhea. Parents should pay attention to add supplementary food to the baby in a timely manner, reasonable feeding, give the correct amount of milk, at the same time should let the baby drink more water, so as to avoid dehydration, diarrhea in serious cases can follow medical advice to apply montelukast, probiotics for treatment; 3, infection: bacteria, viruses and other pathogens infection, can lead to acute gastroenteritis in the baby, thus diarrhea, due to abdominal pain, bloating, can also lead to crying and restless baby, do not want to Due to abdominal pain and bloating, it can also lead to crying and restlessness, not wanting to eat, etc. Bacterial infections can be treated with ampicillin under the guidance of a doctor for anti-infection, and oral gastrointestinal mucosal protectants such as montelukast, and also oral probiotics to regulate the intestinal flora. In addition, oral preparations containing zinc, such as zinc gluconate, are needed to repair the mucosa of the intestine. If the infection is caused by a virus, the main treatment is symptomatic nutritional support.