Abstract: Anthropology gives much attention to different cultures,which brings about a great influence upon post-modernization social sciences.This influence is manifested in the conversion of the practice of “defending likes and attacking unlikes”into the practice of “seeking differences while reserving common ground”in cultural cognition.From Delida's conception of “extended difference” to Deletze's alien proposition,all give a warning against the negative effect of a global “commonness”.And the proposition of “native knowledge”is the prerequisite for fighting the western monostructure social science and reserving varied ecology of human wisdom.

Key words: difference-seeking thinking, spiritual decomposition, nomadism, native knowledge