Diarrhea caused by different causes of enteritis should be treated with different drugs, such as Liuzosulfapyridine, Levofloxacin, Metronidazole and other drugs. 1. Inflammatory bowel disease: mainly including Crohn’s disease and ulcerative colitis. Mild to moderate patients preferred olsalazine, salazosulfapyridine, etc. Moderate to severe patients in the active phase of the disease can use glucocorticoids, such as hydrocortisone. In addition, there are intestinal mucosal protectants and adsorbents, such as bismuth pectin, montelukast, activated charcoal, etc., which have the effect of protecting the intestinal mucosa and adsorbing intestinal toxins. Probiotic preparations such as Bifidobacterium tablets regulate intestinal function. Immunosuppressants such as azathioprine and mercaptopurine. 2. Infectious enteritis: the onset is more acute, diarrhea is obvious, often accompanied by fever. The main therapeutic measure is rehydration, oral rehydration preparations in mild cases, and intravenous rehydration in severe cases. Viral infections usually do not need antiviral, and bacterial infections can be treated with quinolone antibiotics, such as levofloxacin. 3. Pseudomembranous enteritis: mainly due to the improper use of antibiotics caused by intestinal flora dysbiosis, the treatment is to stop using antibiotics that lead to dysbiosis, and vancomycin, metronidazole and so on can be given in serious cases. In addition, patients should pay attention to light diet, eat easily digestible food, avoid spicy, cold and other stimulating food and unclean food, quit smoking and alcohol. The above drugs are prohibited for those who are allergic to them, and should be taken in accordance with medical advice. If the patient is diagnosed with enteritis, it is recommended to go to the regular hospital in time, after clarifying the cause of the disease, under the guidance of the doctor for targeted treatment.