In recent 20 years,electronic publication rapidly develop by taking the advantages of big volume,easy popularization and convenient searh which printed pubications do not have,and have become an emerging dissemination media for knowledge and information.With the deep development of network,network-based electronic publications appear online.Through the analysis of the status quo of electronic publications at present,this paper emphatically discusses the concept and characteristics of online electronic publications and their development in libraries and makes brief analysis of the prosect of network-based electronic publications;compact disc