With the help of rich historical documents, the author organized the life story, Thought development path and works of Liang Qichao in this book with his strong knowledge of history. The development history of the enlightenment thought of the intelligentsia from the late Qing Dynasty to the Republic of China (1912-1949) is revealed with Liang Qichao as the core. The author tried to return Liang Qichao to his original condition and shape and correct the labeling or delayering histories. The historical value and contemporary significance of Liang Qichao are reassessed in this book from aspects of his enlightenment significance to the late Qing Dynasty and the Republic of China, his function in the May 4th Movement and so on.