Abstract: Cultural context is the source and soil of political identity,it is directly related to moral legitimacy and emotional support of the political identity. The change of cultural context is closely connected with the formation of political identity. Throughout the dynamic changes of cultural context,eastern monarchy period,the Western ancient Greece,Rome and the Middle Ages,In the subject attached to the charm,the interests of the "confiscation" ecological fact showing the despotism of cultural prefabricated value. When the history into modern times,multiple identity,interests of diversity,supremacy of consumption,in the eastern and western vaguely show consumer culture prefabricated under the value of different. Along with the expansion of the public sphere and the attempt to govern democracy,the value consensus of democratic cultural prefabrication becomes the trend of change. Correspondingly,political identity after generation logic of under individual and external strength presents chaotic identity,under the double coerces of "privacy" and "indifference" presents private identity,self-centered Rational Identity.