The purpose was to investigate the accuracy of a given model of narcissism based on childhood blows and the quality of interpersonal relationships with the intermediary role of an old sense in secondary school students in Kouhdasht. The present was in terms of applied purpose and in terms of descriptive-correlation method of structural equation. The statistical population of the present study included all the secondary school students of Kouhdasht city with 4110 who were studying in the academic year 1404-1403. The sample size in structural equations is determined by the number of questions or questionnaires, and the minimum number is 2, and in this study, 200 students were selected as the research sample. Research tools were narcissistic Questionnaires (1988), Bernstein et al. (2003), the Quality of Relationship (QRI) Pierce et al. (1991), and the feeling of Kother Strano and Dixon (1990). The data from the Pearson correlation and regression test as well as the factor analysis of structural equations was tested through SPSS-27 and PLS software. Based on the results, the model's fit was generally evaluated at a good level, but the sense of the Knight was not confirmed as a mediator between the tendency to narcissism with childhood blows and the quality of interpersonal relationships. Therefore, based on the results, the necessity of formulating and testing the theoretical patterns in which different theoretical approaches is considered is quite obvious; by understanding, explaining predicting effective factors using theoretical and useful patterns, it can help enrich the knowledge of this field.