Abstract: The continuously pushing of China's information-sharing technology and national cultural planning has brought a powerful impetus to the development of public library’s community service system, while the existing problems including the lack of resource, chaotic management and technical deficiency have also caused some barriers. The development requirements of library environment in information network and knowledge economy is to bring new opportunities for library to expand business functions and achieve the deepen development. Based on the professional advantages and resources advantages, public library should gradually extended to the community with the guidance of local government, which can realize the win-win between the function expansion of library service and cultural prosperity. This paper mainly tried to improve the development contents of public library service system based on the analysis about the management approach, system construction and service strategy of public library’s community extension service.

Key words: Informatization