Herbart believes that the theoretical basis of pedagogy is ethics and psychology. Herbart believes that the most important theoretical basis and primary science of pedagogy is psychology. Herbart is a representative of the traditional school of education and has made important contributions to the theory of educational work. Herbart believes that the theoretical basis of pedagogy is ethics and psychology. Herbart believes that virtue is given to the whole education. Noun, the whole goal of education is to cultivate students' five moral concepts: inner freedom, perfection, goodwill, justice and reward. Herbart advocates that the primary science of education is psychology, and emphasizes that the most important theoretical basis of pedagogy is psychology. It is Herbart's most important contribution to education to demonstrate various practical problems in education and teaching, and to explain the educational work theoretically. Herbart is a representative of the traditional school of education, and put forward four stages of the theory of teaching form: clarity (or clarity), combination (or association), system and method.