The aim of this study was to exams the moral identity model based on personality traits, moral reasoning, perceived parental style and personal identity of adolescence.

The research method was a descriptive - correlation design. Statistical population was secondary high school students who were studying in Mashhad in the academic year 2019-20.  Subjects were selected through the random cluster sampling (199 high school students). They completed Benion & Adamz's Self-identity Scale (1986), Neo Personality scale (1985), Rest's Defining Issues Test (1999), Bamerind's Perceived Parenting Style Scale (1973) and Aquino & Reed's moral Identity Scale (2002). Data analyzed by structural equation modeling (SEM).

Findings showed that the proposed model of moral identity based on the variables has a good fit. Internal correlation is significant in most research variables, the results have shown that the direct effects of moral reasoning on moral identity, personality traits on identity state and on reasoning moral and moral identity was meaningful. The effect of parenting styles on identity state and moral reasoning and identity state on moral identity was significant. The results also showed that all indirect effects of the model are also significant. Moral reasoning was the mediator of the effect of each personality variable on moral identity and the effect of parenting styles on moral identity. In addition, the results indicate an indirect and significant effect of personality traits and parenting styles on moral identity through the mediation of personal identity and personality traits and parenting style on moral identity through the mediation of identity bases

According to the findings, apart from the role of each proposed variable in moral identity, personality traits and parenting styles have a mediating role in the development of moral identity by influencing personal identity and moral reasoning.