Undifferentiated somatoform disorder is a psychiatric disorder in which the patient complains of one or more somatic symptoms for which he or she is distressed, commonly fatigue, lack of appetite, and gastrointestinal or urinary complaints. However, medical examination does not reveal evidence of physical disease or any organic pathology. Therefore, a diet of light and easily digestible foods, vitamin-rich foods and foods rich in vegetable protein is recommended. The details are as follows. 1, winter melon: winter melon is with the advantages of clearing heat and phlegm, help digestion, easy absorption, etc., the diet of patients with abdominal pain is better. 2, tomatoes: tomatoes are rich in vitamins and trace elements, has a high nutritional value, easy to absorb, to help the body recovery. 3, soy milk: soy milk has the role of protecting the gastrointestinal mucosa, promote digestion and absorption, has a very to nutritional value.