ntroduction: The study of personality disorders in psychology has been done by observing and investigating the behaviors of a person with a disorder, and clinical interviews and variations of personality disorders in the book-text and fictional characters are not considered especially in children’ s literature. In this research, three personality disorders (avoidant, depressive and schizotypal) in three characters (Tuka, Mother of Tuka and Nima) of two teenage novels (THE GIANT FROM THE TIN CAN and THE DARK SISTERS) from children literature, authored by Mehdi Rajabi were studied in a bibliographic approach. Methodology: The components of personality disorders in this research are collected by library method (literature review) and research method was of qualitative and content analysis type. The instrument in this study was a diagnostic criterion in three personality disorders. These criteria in the disorder of the alternate personality included: "mental retardation, physical degradation, self-comparison, isolation, distress, and the lack of risk in life; in depressed personality disorder diagnostic symptoms: " were repetitive lifestyles, obesity and neurology, and symptoms in schizotypal personality disorder were "illusion, magical and magic thinking, unusual and strange behavior, traveling in time and place, paranoid thinking, an egalitarian or limited emotional state, loneliness, and the lack of friend. These criteria were studied in three fictional characters (Tukka, Mother Tuka and Nima) have been investigated. Findings: In the text of the book Dark Sisters, eighty-six samples were observed based on the components of schizotypal personality disorder in Nima's personality. In the book THE GIANT FROM THE TIN CAN, there were twenty-four samples based on the components of depressed personality disorder in the mother of Tuka, and twenty-two samples based on the components of the personality disorder in the Tuka personality. Conclusion: In examining the samples based on personality criteria in the three personality disorders, schizotypal personality disorder, depressive personality disorder, and avoidant personality disorder were observed more, respectively. IIn the characters of these two works, there are significant psychological problem that can help the librarians, teachers and psychologists as therapists in the children's and adolescent’ s bibliographic approach, as the children and teenagers' audience, by replicating themselves with the characters of the story, can come up with practical ways to solve their actual problems.