The website library is a new type of digital library incorporating both digital collections and digital service. In the parliamentary context this new application of information and communications technology has a dual function: to provide a virtual collection to satisfy users' information demands, and to provide all the current services needed by clients of a parliamentary library in modern society. In the present paper, the application of information technology in the library, the role of media in the library, and its digital collection development are surveyed by decades from 1960 to 2010. Then the five categories of Internet-based content in the website library of the Parliamentary Library of the Legislative Yuan are described, and an overview of this website library's services is given.