The changing face of the Taiwan population is reflected in the changing library and information needs of public library patrons. Diverse communities need different types of materials than what has traditionally been available. A key issue in serving the multicultural community is the need to adopt a revised vision of collection development. This article describes the experiences of Australian, Canadian and public libraries in developing multilingual and digital collection and introduces the methods used in Taipei Public Library to develop collection under the circumstance of globalization, digitalization and demographic changing.