The diet of people with irritable bowel syndrome should depend on the specific situation, generally speaking, it is suitable to eat a diet rich in dietary fiber and vitamins, light diet. Irritable bowel syndrome is a disease caused by a variety of factors such as genetics, diet, abnormal gastrointestinal dynamics, visceral hypersensitivity, immune factors, mental and psychological factors, etc. It is mainly characterized by symptoms such as abdominal pain, abdominal distension, and changes in bowel habits. For this group of people, dietary fiber and vitamin intake can be increased in the daily dietary arrangement, such as fresh vegetables and fruits, grains and other foods, but it should be noted that if there is a manifestation of flatulence, it is necessary to avoid the intake of these foods. For people with irritable bowel syndrome, the diet should be light and easily digestible to minimize the stimulation of internal organs. Diets should be individualized according to the specific situation, such as reducing lactose diet for lactose intolerant people; reducing the intake of gas-producing foods such as beans for people with flatulence and abdominal pain, and avoiding stimulating foods such as coffee, alcohol, and chili peppers. It is recommended that people with irritable bowel syndrome should consult a doctor for a clear diagnosis of the cause of the disease and follow the doctor’s instructions for regular treatment and dietary arrangements.