This paper analyzes the successful experiences of inter-generational reading with the typical inter-generational reading promotion in foreign countries. It is considered that inter-generational reading and promotion is a way to meet the needs of inter-generational demands and promote social harmony. The author suggests that inter-generational reading promotion activities should be approved with continuity and distinct characterization and with the model of people participating based on family. The public library, as the main body of creating a hierarchical pattern of inter-generational reading in order to explore the harmonious new reading and promotion methods, is supposed to link with social forces to achieve good promotion and social benefits.