This study is analyzed the cited documents after selecting Management Administration Economics Trades in order to comprehend the study sphere and tendency for the three years from 2005 to 2007 in which 540 articles and 22,147 cited documents. In the analyzing result, the scientific study exchange communication activities is making progress more actively by the sole study rather than the joint study and over 77% of references are published before around 10 year-old, specifically 8.5 year-old documents have been used the most. The half-life period is 10.9 years for domestic books and 11.1 years for international books. For the journals, it is 6.0 years for domestic and 8.2 years for international which tells international articles are slightly longer half-life period than domestics.