Patients with functional abdominal pain syndrome often have general discomfort, abdominal pain lasting longer, may affect the patient’s appetite, so diet therapy is also particularly important, a reasonable diet can not only reduce abdominal pain, but also improve the nutritional status of patients. The specific dietary principles are as follows: 1, diet should be regular and quantitative, try to eat less and more, do not overeat; 2, light diet, avoid eating too much greasy food such as fatty meat, fried chicken, etc.; 3, to ensure a balanced nutrition, eat more fresh fruits and vegetables rich in vitamins to help protect the gastrointestinal mucosa and improve its defense ability; 4, eat more food rich in dietary fiber to increase gastrointestinal motility; 5, avoid eating Raw and cold foods to avoid causing abdominal pain or diarrhea.