The aim of this research is to get the opinions of psycho-diagnostic activity on the vocational training of educational psychologists of the trainings given at the university for the organization of psychodiagnostic activities in the educational environment. With the findings to be obtained from this research, it can be concluded that the efficiency of the pedagogical activity and the education of the future occupational groups can be effective. Qualitative research design was used in this study. The psychodiagnostic readiness levels of teacher candidates studying at university were measured. The study group of the research consists of 78 senior students studying at the faculty of education at universities. The research questions were applied with the permission of the ethics committee. In the spring semester of 2021-2022, a working group was formed with the last year teacher candidates studying at the education faculties of two universities. The findings obtained from the research were analyzed with the content analysis method. According to the results of the research, it was concluded that the readiness of the people who will do the teaching profession should be increased by increasing the psychological knowledge in teacher education in educational institutions. Keywords: Formation, university, pre-service teacher, psychological, psycho-diagnostic