The purpose of the article is to outline the essence of the methodical activity of a biology teacher and determining its types. The article reveals the essence of biology teacher’s methodical activity. The teacher professional activity has been analyzed. The essence of educational, correctional and developmental, cultural, social, organizational, research, profile, substantive and methodological activities has been revealed. The author has presented the views of the scientists upon the methodological interpretation of the teachers. The article has established that the methodological activity of a biology teacher covers the theoretical and practical efforts in planning, design and implementation of the school biology course content, the forms, the methods and means of training to impact the pupils’ development by nature. The functions of methodical teachers’ activity have been disclosed. The author has determined and characterized the kinds of methodical activity of a biology teacher. The design-constructive activity consists of thematic planning, planning tours, the educational event, and workshop; formulation the educational objectives of each lesson design the students’ competence; analysis and structuring the content of teaching material. The organizational activity is composed of organization the public events of biology, club work, clubs and societies, training, group work in the classroom; organization of various forms of control of educational students’ achievements. The reflective activity is embodied in the teacher’s own evaluation of the results, efficiency, the forms, the methods and tools of adequacy tasks assigned to the students; awareness of its theoretical and vocational training. The technological activity includes the exploring of new technologies studying how to use information technology in teaching the biology. The research activity envisages organization and conducting the pedagogical experiment in a real educational process. The methodical activity of the future teachers of biology take place in the classroom lessons during studying the subject «The methods of teaching the biology» (lectures, practical and laboratory classes), during the students’ independent and research work, studying courses of methodological guidance, in teaching practices and more. The further research problem requires the formation of the methodical competence of future teachers of biology.