Analysis of illness: Irritable bowel syndrome is an intestinal disease with recurrent abdominal pain, diarrhea, abnormal defecation habits and characteristics, which is mostly related to mental factors and intestinal stimulation. The diet is light, easy to digest and less greasy. Suggestion: It is suggested to eat more high-fiber foods such as fresh vegetables, fruits and cereals, which can stimulate gastrointestinal peristalsis and improve symptoms. At the same time, we should pay attention to avoid spicy and greasy diet. Avoid anxiety and tension.