The effect of behavioral characteristics and characteristics of accountants on behavioral accounting has led to the formation of research in behavioral accounting. The purpose of this study is to investigate and design a structural model of relationship between self-efficacy and job performance with mediating role of mental health and mental toughness of accountants. The present study is applied in terms of quantitative performance, in terms of application and in the field of positive research. The research is descriptive-survey in terms of purpose and is descriptive in terms of data collection. To measure and measure the variables of self - efficacy, job performance, mental health and mental toughness of accountants, Sherer et al, Hersey & Goldsmith, Goldberg general health and Kobasa et al, were used. The validity and reliability of the questionnaires were confirmed by face validity and cronbach's alpha, combined and shared reliability. The statistical population consisted of 350 accountants who were selected as the statistical sample according to Krejcie-Morgan table. The results showed that the proposed model has been confirmed and self-efficacy has led to mental toughness and mental health. Mental health variables and mental toughness have mediating role in the relationship between self-efficacy and job performance. The findings of this research showed that since accounting profession in the row of high psychological pressure jobs is high, paying attention to psychological variables of self-efficacy, mental health and accountants' perception can be effective in predicting professional and professional managers for performance evaluation and training of professional accountants.