The symptoms of eating disorder are different according to the classification, the clinical manifestations are also different, as follows: 1, anorexia nervosa: patients mostly appear weight loss, weakness, hair and nail brittle, some patients will also have cardiac arrhythmia, anemia and other systemic symptoms, women can appear menstrual changes or amenorrhea, most patients will be accompanied by mental symptoms, such as anxiety, depression, etc.; 2, bulimia nervosa: is a recurrent episode of Bulimia nervosa: It is a kind of recurrent binge eating, patients have uncontrollable eating behavior, the amount of food eaten in each attack is much more than the amount of daily meals, and after the binge eating, there will be induced vomiting, diarrhea or excessive exercise, etc. Patients are often tired and weak, yellow skin, and have depression, irritability and other bad emotions, and some patients may have symptoms such as cardiac arrhythmia.