The studyof interpersonal conflicts in teenagers’ environment, and also the forms and methods of teenagers’ interpersonal conflicts prevention has become the aim of the research. 137 eighth gradestudents of comprehensive schools of the city of Kazan were recruited for the experiment. The battery of tests was used to collect information: T. Leary's technique to diagnose interpersonal relationships; the scale for theassessment of psychological climate in the collective; K. Thomas'stest - description of behavior, and also methods of mathematical statistics, Student's T-criterion to check the hypotheses of reliability of thedifferencebetween means. The results revealed during the stating stage showed a low degree of psychological climate friendlinessin the collective that, in its turn, causes interpersonal conflicts. Such strategies of behavior as compromise and rivalry dominate in the group of testees in conflict situations.After the experiment there were obtained the following results: the psychological climate in the collective has improved up to the average degree of favorability; in conflict situations teenagers have started to choose such strategies of behavior as compromise and cooperation, the latter of which is aimed at theconflict constructive resolution. The number of the respondents in the group of testees who have chosenthe friendly type of interpersonal relations has increased i.e. this is the tendencyto collaboration and cooperation.