Most of the long-term diarrhea may be related to enteritis, but it may also be related to poor gastrointestinal function. The main thing is to take drugs to protect the gastric mucosa and intestinal mucosa and to regulate the intestinal flora, and you can take drugs such as Flavopiridol, Bifidobacterium triadicum or Bifidobacterium quadicum, Lactobacillus tablets, etc. as prescribed by your doctor. You must pay attention to maintenance, participate in more aerobic outdoor sports to enhance physical fitness, keep a relaxed mood, do not smoke, do not drink, do not overeat, do not eat barbecue food and pickled food, eat more food rich in protein and vitamins, eat more nutritious and easy to digest food, pay attention to dietary hygiene and diet rules. If a week does not work, please go to the hospital for a specific examination to clarify the cause and systematic treatment.