Spencer, a British educator, occupies an insurmountable position in the history of pedagogy, because Spencer advocates practical education and adheres to the methodological principle of positivism in pedagogy research. Spencer's masterpiece is On Education, formerly known as Education-Intellectual Education, Moral Education and Physical Education, which is compiled from four educational papers published by Spencer: 1854, 1858 and 1859. Published in London on 186 1. The book is divided into four themes: "What knowledge is the most valuable?" Intellectual education, moral education, physical education. This book mainly shows and publicizes the new demands of the bourgeoisie for education during the prosperous development of British capitalist economy in the19th century. Spencer's positivist philosophy and bourgeois social and political thoughts run through the book.