Acute gastroenteritis in babies generally refers to acute gastroenteritis. If it is caused by a simple viral infection, the symptoms are mild and can usually be self-healed in 3 to 5 days. However, if there is a bacterial or parasitic infection, etc., the condition is more serious, often can not be self-healing, and need timely treatment. Baby acute gastroenteritis, according to the different pathogens, can be divided into viral, bacterial and parasitic, if the viral infection, there is a certain self-limiting, when the condition is mild, usually 3 to 5 days can be self-healing, but there are individual differences, and the severity of the disease and the child’s own physical condition. If the baby acute gastroenteritis bacterial infection or parasitic infection, the symptoms are more serious, often can not be self-healing, the need to consult a doctor in a timely manner, according to the type of pathogen, targeted treatment to avoid aggravation of the condition, but also pay attention to the baby to drink more water, to avoid dehydration, but also oral rehydration salts, to maintain the stability of the internal environment.