Acute gastritis is a common disease in gastroenterology, often due to dietary impurity, giving fluids is usually best for 3 to 5 days. Acute gastritis is a common and frequent disease in gastroenterology, occurring in summer and fall. It is often triggered by eating unclean food, getting cold or taking irritating drugs. Clinical symptoms include abdominal pain, diarrhea, nausea, vomiting and fever. Common causative factors are: bacterial and viral infections, and physical and chemical irritation. Acute gastritis treatment is to give acid suppression, protection of gastric mucosa and rehydration therapy, such as omeprazole, magnesium aluminum carbonate, the course of treatment is mostly 3 to 5 days, the symptoms can be significantly improved. During the recovery period, patients should pay attention to a light diet, try to eat warm, thin, soft, easy to digest cooked food, such as rice porridge, steamed bread, etc., to avoid frying and baking and other foods.