Patients with duodenitis should take some anti-inflammatory antidiarrheal and intestinal mucosa protection drugs. For example, levofloxacin, pipemidic acid, berberine, and montmorillonite powder can effectively diminish inflammation and protect intestinal mucosa. At the same time, you can drink some sugar salt water or light salt water to avoid water and electrolyte disorders caused by diarrhea. At ordinary times, we should develop healthy eating habits, eat less and eat more, and chew slowly. Pay attention to food hygiene. Don't eat raw, cold, dirty, spicy and hot food, such as pepper, pepper, malatang, barbecue, ice cream, and iced drinks. Avoid aggravating duodenitis and other symptoms. You can eat some fresh vegetables and fruits in moderation, supplement vitamins, increase immunity, and must quit smoking and drinking.