Abstract:Structural social work has been expanding its influence while experiencing marginalized crises since 1970s: with the expansion of neo-conservatism, the structural perspective is incompatible with the liberal-based system at the political level. In recent years, the “critical reflection practice” established through the reunification of the socialist tradition of social work has become increasingly prosperous, but it has not been possible to answer the question of legitimacy in its own theory. The purpose of this paper is to reflect the crisis of the traditional sociology by analyzing the crisis of western sociology, and to try to reconstruct the critical social science by talking with Iván Szelényi and others to sort out the concept of “irony” as a methodology and the mission of contemporary intellectuals. Under the inspiration of relevance of classical sociology and social work, this paper provides insights to the reconstruction of social work.