When acute gastritis occurs, the following treatment should be given: First, general treatment: the cause should be removed, bed rest, stop all diets and drugs that are stimulating to the stomach. Give a light diet, stop eating 1-2 meals if necessary, drink more water, take sugar saline orally when diarrhea is heavy, avoid electrolyte disorders in the body, and maintain the acid-base balance in the body. Second, symptomatic treatment: abdominal pain can be given local hot compresses, if the pain is more obvious, give painkillers, such as atropine, scopolamine, compound belladonna tablets, etc., severe vomiting to give gastric complex. If there is increased secretion of gastric acid, H2 receptor blockers or proton pump inhibitors are given to inhibit gastric acid, and magnesium aluminum carbonate is given to protect the gastric mucosa. Anti-infection treatment is generally not required, but if it is caused by bacteria, especially with diarrhea, antibacterial such as flavopiridol, haloperidol and sulfonamide can be used. Third, rehydration therapy: If vomiting and diarrhea cause dehydration and electrolyte disorders, oral rehydration salts can be given while correcting the original disease. In severe cases, intravenous rehydration can be given. In patients with acidosis, sodium bicarbonate is given to correct the acidosis.