Abstract: Mao Zedong’s socialist thought, his idea to socialism,includes his conception of socialist essence, contradiction,task, phase of development, drive, opening to the outside,economic system, ownership structure, distribution system,development strategy,democratic politics, role of law, leading power and power of relying on. His socialist thought ont only keeps on socialism and develops it,but also copys it literally and departs from it. Its characteristics are:right and wrong mingles; ideas shake; reality and ideality interweaves.