Introduction & Objective: Rhinoplasty can be called the most commonly used cosmetic surgery in Iran, which is increasing. Studies have shown that mental health and self-esteem are among the factors that can affect people's tendency to rhinoplasty. People's perceptions of their appearance can also affect mental health, self-esteem and tendency to rhinoplasty. Therefore, the aim of this study was to determine the relationship between meta-cognitive assessment of body shape with mental health and self-esteem of applicant women for rhinoplasty who referred to Kermanshah cosmetic surgery centers in 2017-2018. Materials & Methods: The present study is a descriptive-analytical-cross-sectional study that was carried out in Kermanshah cosmetic Surgery Centers in 2017-2018, including a private clinic and Taleghani State Hospital on a sample of 150 applicant women for rhinoplasty. Data were collected through questionnaires of meta-cognitive assessment of body deformity (BDMCQ), Rosenberg Self-Esteem Questionnaire (SES), and General Health Questionnaire (GHQ-28). Then, the findings were analyzed using SPSS16 software, descriptive and inferential statistics and Pearson correlation and Linear regression. Results: This study was performed 0n 150 women with an average age 24.04 ± 4.24. In terms of marital status, 80% of subjects were single. The results of the data analysis showed that there was a significant positive correlation between mental health (P < 0.001, r = 0.52), depression (P < 0.001 r = 0.48), anxiety (P < 0.001, r = 0.47), social function (P < 0.001, r = 0.32), physical symptoms (P < 0.001, r = 0.41) and meta-cognitive assessment of body deformity. And self-esteem had a negative correlation with meta-cognitive assessment of body shape (r = -0.39, P < 0.001). Also, analysis of the data showed that there was a significant positive correlation between mental health sub-scales (physical symptoms, anxiety, social function, depression) and sub meta-cognitive assessment of body deformity (metacognitive control strategies, thought-action coalitions, positive And negative meta-cognitive beliefs and safety behaviors) (P < 0.05). There was a significant negative correlation between self-esteem and sub-scale meta-cognitive assessment of body malformation syndrome questionnaire (P > 0.001). Also Self-esteem and mental health explained 30% of the meta-cognitive assessment of body deformity (R2adj = 0.30). Conclusions: According to the results of this study, increase of self-esteem and mental health lead to a better meta-cognitive assessment of the body shape, which can be helpful in reducing the cosmetic surgeries. On the other hand, improving the assessment of body can improve mental health and self-esteem, which these factors are the causes of people tendency to the cosmetic surgery.