This paper aims to contribute to the management of university libraries by analyzing basic facts about the conflicts in terms of recent theories on personal conflicts. In this hypothetical model, mutual relationship between conflict level and each independent variable was analyzed to test various hypotheses. A step by step regression analysis was made to find out the most influential factor on conflict levels. To attain the research objectives, 18 libraries $(66.67\%)$ in 27 private universities in Seoul were selected as informants. Questionares were distributed to 336 librarians out of total 342 and 280 answer sheets were collected back. Disregarding insignificant 7 answers sheets, total 273 ($81.25\%$ of distribution ) were taken as data for this research.