Abstract: Based on the objective law of China's socialist development, this paper analyzes and discusses from the theoretical origin and practical process the evolution and track of the life cycle of the socialist development. Based on this prediction, China will gradually complete the basic tasks of the primary stage of socialism by 2035, and enter a new fifteen-year (2020-2035) transition period. During the period from the primary socialism stage to the intermediate socialism stage, socialist modernization will be basically realized; by 2049 the comprehensive construction of a socialist modern power will be completed, and by 2078, the comprehensive construction of a developed socialist country will be achieved. By the end of this century, the great rejuvenation of the Chinese nation will be realized.