Prevention - teacher competences are one of the basic elements that contribute to the quality of education of children and young people. To be a competent teacher means to be properly prepared to practice this profession, and in the case of prevention to have specialist knowledge in the field of prevention and apply it to work at school. This publication was created for all people involved in preventive activities, both in the scientific and practical area. The author wanted to show what knowledge and skills prevention-teachers should have.