Abstract: The network virtual space represented by social network has a large number of demand for reading service,and provides a new era background and work challenge for the library to carry out reading promotion service.The object, content, mechanism, method and requirement of reading promotion service in the library have changed. The emergence of network virtual space challenges the social knowledge center status of the library, and the demand of reading promotion service in the network virtual space forces the library to carry out reform and innovation in resources, management, service and other aspects.In response to the challenge of the network virtual space, the library should accelerate the integration with social network, build a new reading promotion service strategy system, strengthen the protection of readers' privacy, carry forward the spirit of the library and other aspects of holiday work to promote the network virtual space the continuous innovation of reading service in space library.

Key words: network virtual space;social network;reading promotion;library