It has been for Public Administration undergoing giant change of value, institution and process, etc. Traditional values have been gradually replaced by ones of market mechanism. What is enhanced in the “management” and deteriorated in the “administration” follows the fashion. What has happened to Public Administration? In this article, the author tries to solve these problems by the concepts of “focus” and “locus” to study these ones. The author also tries to put the focus of public interest and locus of bureaucracy into order and find out the essence of Public Administration.