本文主要探討美國寄存圖書館發展的新趨勢。原有的寄存圖書館作業方式係集中印刷與分送至寄存圖書館。自從資訊科技的發展，尤其是網際網路（Internet）興起後，將改變原有的作業方式，由集中制將進展到分散制的寄存圖書館，其變革可謂十分深遠。本文將探討影響美國寄存圖書館發展的因素、電子寄存圖書館的發展、寄存圖書館典範將產生何種改變、實體寄存圖書館何去何從、以及寄存圖書館員的因應措施。

　　This article discusses the prospects of the Federal Depository Library Program (FDLP) in the United States. The conventional FDLP is based on centralized creation and dissemination of government information through GPO. The developments of information technologies, particularly Internet, has dramatically impact on FDLP. The operation of FDLP will be changed from centralization to decentralization. This article provides an overview in five areas, i.e. the factors affect FDLP development, the development of electronic depository library program, the paradigm shift from FDLP to electronic depository library, the status of physical depository library, and the reactions of depository librarians to the electronic depository library.