The appearance of a new moral judgment model—CNI model makes the related research more
in-depth and detailed. The application process of this model in the existing research results is tortuous,
which extends from being only applicable to group research at the beginning to being applicable to
individual differences now. This paper introduces and sorts out the application of CNI model theory in
individual level. At the same time, the limitations of this model are introduced, so that future researchers
can make targeted improvements.