Against the spirits of Enlightenment, postmodernists claim that people need a new way of thinking when a new epoch was born today. On the other words, they attempt to subvert tradition of modernism by a revolution of thought. A kind of postmodern philosophy, therefore, and some radical theories in different disciplines become flourishing incrementally. Facing this turn of knowledge, what the study and the construction of theories of public administration will be enlightened that is this paper concerned about. First, this paper tried to describe the development of postmodernism in western history, furthermore, to proceed a dialectic between modernism and postmodernism, and finally, to analyze the postmodernistic image of theory in public administration.