Abstract: In accordance with Marxism,the development of human's civilization is not only a process of society's advancing from lower phase to upper phase,and also of gradually advancing from an one-sided as well as unbalanced state to a free as well as all-sided one.However,in the history of Soviet Union's developing socialism,both Stalin and Gorbacher go into two different extremes on the development of human's freedom which finally bring uncompensable losses.In china,therefore,we are expected to hold the guideline of Marxism's theory of all-sided development for human's freedom.We should prevent the Capitalist's process of Modernization at the cost of human's freedom,and especially should keep the lessons of traditional socialist society in mind,unceasingly promoting the all-sided development of human's freedom as well as socialist society with Chinese characteristics.