The purpose of this study was to compare the psychological well-being and character strengths of students based on their field of study. The research method was causal-comparative and for this purpose, 351 students of Islamic Azad University of Shabestar Branch from different faculties and different fields of study were selected by cluster sampling method. Measurement tools included the psychological well-being questionnaire (Reif, 1989) and values in action inventory of strengths questionnaire (short form) (Patterson and Seligman, 2004). Multivariate analysis of variance was used for data analysis. Results of the research showed that the components of psychological well- being and personality dynamics in students based on their field of study were significantly different (p<0.05). Between students of humanities, engineering, basic sciences and agriculture in terms of autonomy, personal development, self- acceptance, and psychological well- being (in general), and among the components of the power of life, Except for the components of leadership, forgiveness, humility and humor, there were significant differences between the other components (p<0.05). As a result, the mean score for head of two variables was higher in humanities students than technical- engineering students.