Abstract: NIMBY conflicts are triggered by inappropriate compensation or poor communication superficially, but deep down they are caused by cognitive bias among government officials, experts, and the public involved in the policy. This bias not only affects surrounding publics' behavioral intentions but also their direct actions. Existing literature mainly focuses on the origin, causes and coping strategies of NIMBY conflicts with little emphasis on the cognitive differences among the different conflict subjects. With the application of fuzzy Delphi method to construct a set of assessment framework, the study tries to reveal the different subjects' attitudes on NIMBY cognitive strategies and seek true reflection of the surrounding publics.