Abstract: Mao Zedong structured new democratic and harmonious society by using economy, politics and culture--three social structure analytic approach that makes sense, proving the three to develop harmoniously in an all-round way. The theory and practice of his idea of the triune approach about the base area are the concrete expansion of the harmonious social thought of the new democracy. And the final landing is on man' s harmonious development Mao Zedong' s innovative thought has important vale of reference in structuring the socialist harmonious society.