Dissociative identity disorder, as a psychological disorder, is often called split personality
disorder. People are familiar with it, but few can really understand its symptoms and feelings of
patients. Through the analysis of The Girl with a Split Personality, according to the self-description of the
protagonist and the reaction of the content, the author has a deep understanding of the patients with
dissociative identity disorder, and analyzes the basic characteristics of the patients, in order to arouse the
readers’ sympathy.