Dietary adjustments: Breastfed children continue to be breastfed, non-breastfed children under 6 months of age continue to be fed formula milk, and children over 6 months of age continue to eat the foods they have become accustomed to, such as congee, noodles, rice, eggs, minced fish, minced meat, and fresh fruit juices. Encourage the child to eat, and increase the number of meals if the amount of food eaten is low. Avoid feeding children vegetables and fruits containing crude fiber and foods high in sugar. Viral enteritis is often secondary to lactase deficiency, can be temporarily changed to low (de)lactose formula, time 1~2 weeks, diarrhea improves after switching to the original feeding mode. Zinc supplementation: Children with acute diarrhea should be treated with zinc supplementation once they are able to eat, 20mg of elemental zinc per day for those over 6 months of age and 10mg of elemental zinc per day for those under 6 months of age for a total of 10~14 days. If the condition does not improve or any of the following symptoms occur, the patient should be sent to the hospital for consultation: 1) severe diarrhea, frequent stools or large amount of diarrhea; 2) inability to eat and drink normally; 3) frequent vomiting, inability to give medication orally; 4) fever (temperature >38℃ in infants <3 months of age, and >39℃ in infants and children between 3 and 36 months of age); 5) obvious thirst, and signs of dehydration (sunken eye sockets, fewer tears, dry mucous membranes or decreased urine output, etc.) and decreased urine output are detected. Decreased urine output, etc.) and altered mental status (irritability, apathy, lethargy, etc.); 6. Blood in the feces; 7. Age <6 months, preterm infants, history of chronic diseases or comorbidities.