Compiling Mao Zedong's biography is an important task undertaken by the Documentation Research Office of the Central Committee of the Communist Party of China. With rich and detailed archival materials, this book vividly and meticulously describes Mao Zedong's major decisions and in-depth thinking in the process of leading the new democratic revolution, creating the Communist Party of China, the People's Army and New China, leading the restoration of the national economy, realizing socialist transformation, and exploring the path of China's socialist construction. It comprehensively reflects his great achievements in realizing the great rejuvenation of the Chinese nation, establishing the fundamental system of socialism, and pioneering the path of China's socialist modernization. At the same time, Mao Zedong's mistakes in his later years were also described and analyzed realistically.