Abstract：Although the word “story” has a long history in people’s daily use, its analytic and instrumental role as a theoretical concept in social science study have been ambiguous and await to be explored. The paper tries to introduce “story” as an analytic theoretical concept to social science study. The paper gives a definition to “story” and discusses “story” as well as the actions influenced by “story”. Then the paper provides a preliminary discussion to the position of “story” by combining “story” with the existing theories in both fields of collective actions that influence short term social operation and social norm that influence long term action features. The results of literature review and analysis show that when introduction “story” to the discussion of collective action study, it is the short-term and even instantaneous definition of the situation be the key link where “story” plays its function. “Story” exerts an influence on people’s action decisions and collective actions by influencing the subjective explanation and judgment on certain environment and situation before people decide whether to participate in the collective actions. In the discussion that connects social norm and “story”, an important link where “story” plays its role is collective memory. In long term , “story” can exert influence on the forming and evolution of common norms through influencing the construction, inheritance and evolution of collective memory of certain social groups, to some extent being a carrier of social norm.