Abstract: The introduction of Person-Organization Fit (P-O Fit) corresponded to the trends of person-context interaction study in organizational behavior, and complied with requirements of organizations and their members to cope with the dynamic situations flexibly. It is a unique feature of P-O Fit to consider bilateral interactivity and matching flexibility as the starting point and the standpoint of the study. However, there is a tendency of paling the unique feature at present. Thus, to regain the feature, the paper is on the basis of clarifying the background of the introduction of P-O Fit, and it emphasizes that researchers should integrate interactivity and flexibility, the two basic requirements, into the study of the concept, measuring strategy and applying of P-O Fit.

Key words: person-organization fit, interactivity, flexibility, consistent values, measuring strategy