The treatment of anorexia nervosa includes nutritional support therapy, medication, psychotherapy, and psychological growth of the individual. 1. First, nutritional support is given to ensure the nutrition required for life and to supervise food intake at regular intervals. In this process, the patient’s cooperation with the treatment is sought, although it sometimes seems difficult. 2.Medication: Medication can relieve accompanying emotional problems such as depression and irritability, reduce impulsive behavior, and somatic perceptual disorders with paranoid nature. 3.Psychotherapy is very important to help patients, most of whom are suffering from inner pain and emptiness. All attention is on weight body type, and their symptoms are usually a way of defense against psychological pain, with secondary benefit, unconsciously avoiding the difficulties that make them more distressed. There is a lack of confidence in interpersonal relationships, especially in intimate relationships; there is excessive academic stress; there is total denial of oneself; there is internal insecurity but a desperate and difficult attempt to control others; there is an unstable parental relationship, quarrels or divorce, and many other psychological, family and social factors that can trigger or influence the development and prognosis of eating disorders, and psychological counseling and treatment can focus on these psychological factors to work. 4. Self-growth: They tend to ignore their own psychological problems, but rather attribute them to their own physical causes. They mistakenly believe that if they are physically slim, they will have confidence, but this is a cognitive bias. Patients need to stay curious and explore the psychological phenomenon, find the most fundamental reason affecting their mood, so as to face and solve it, and for this reason can gradually get out of the trouble brought by anorexia nervosa.