圖書館是一個蒐集、整理、保存資料以便提使用的機構。館藏資料是圖書納組成的核心，館藏資料的品質影響著圖書館服務的品質。資訊科技的進展，出版的迅速，所造成的資訊爆炸，使得圖書館無法盡收天下書，如何發展館藏以利有效資訊之提供並滿足其讀者群的需要，是圖書館經營之重要課是。故館藏發展政的研訂有其必要性，不但可提供選書館員在選書時的依據，亦可作為館藏汰舊的參考。但是館藏發展政策的擬定必須耗費相當的人力與物力於資料的蒐集，可是多數的圖書館卻缺乏足夠的人力及時間去蒐集相關資料，而無法擬定館藏的發展政。本文將依次討館藏發展及其問題、館藏發展政策及其問題、網路資源與館藏發展、館藏觀念的革新及資訊化社會之館藏發展政策。

　　　　　 Library is an organization to collect, organize, and preserve information for user to utilize. The quality and quantity of library collections is the foundation of the library and affect the quality of library service. With the advancement of computer technology, information processing, and the speed of publication, it is impossible for libraries to collect all the published information. A written document of collection development policy is necessary for the library, and it can provide a guideline for librarians to make decision while selecting information. However, due to the shortage of manpower and lack of time, a lot of libraries don't have a written policy to deal with collection development. The purpose of this paper is to examine collection development of a library, its policy of collection development, its Internet resource, and its innovation of collection development.