This study aimed to investigate the medical student's perception of scientific integrity, to discuss the need to address this topic throughout the education of ethically responsible researchers and to clarify the importance of educational practices that aim at ethically educating this student. This was a qualitative study, using the technique of thematic analysis. Data were collected through semi-structured interviews, by setting up three units of data analysis: the student's knowledge about the CEP/Conep system (Research Ethics Committee/National Commission for Research Ethics system), the perception of students about scientific integrity and scientific dishonesty, and approach to the theme of scientific integrity in the medical curriculum. This study showed the need for a more effective approach on the CEP/Conep system. Similarly, the theme of scientific integrity seems to be little discussed in the academic environment which can lead to the practice of scientific misconduct due to lack of recognition of it by students. The combination of theory and practice in the teaching of scientific integrity is essential; this issue should be inserted early in the medical curriculum.