Educational law is the essential relationship between various factors in education and between education and other things, and it is the inevitable trend of educational development and change. The research task of pedagogy is to reveal all kinds of laws of education (including macro and micro) according to the logical level of education, to build a pedagogy system with China characteristics, and to clarify the principles, methods and organizational forms of education on the basis of revealing the laws of education, so as to provide theoretical and methodological basis for educators. Theoretically, pedagogy should provide scientific decision-making basis for educational decision-makers and help educational administrative departments to formulate and adjust educational policies; In terms of methods, pedagogy should give guidance to practical educators, help schools and teachers improve their work and improve the quality of educational science.