The main purpose of the Electronic Theses and Dissertations System is to enable the general public to search for theses and dissertations data including abstracts, and electronic full texts. This paper analyzes the quantity growth and the use situation of this system. The citation analyses of full text and non-full text theses and dissertations during August 1999 to July 2008 are compared so as to realize the scholarly impact of document accessibility. The results of this study reveal that the citation ratio of full text and non-full text theses and dissertations is 2 to 1.