This paper attempts to study the public libraries and multicultural services. It discusses the nature of libraries and multiculturalism, public libraries and multiculturalism, and the multicultural services provided by public libraries to their users. The author of this paper believes that to develop library multicultural services is to meet the needs of the general public in current multicultural society. In doing so, public libraries are able to fulfill their cultural function among the four basic functions, that is, educational, informational, cultural, and recreational functions.