Abstract: Abstract： By way of the negative, critical interpretation of ideology, Marx actually expresses a basic thinking of scientific ideology, which enlightens us deeply in the methodology of understanding the socialist core value system. As a consciousness of the reflection of ideology during the period of social transition, it works as the identified theoretical basis of the social system, and also as the "spiritual sun" of guiding social trends.

Key words: socialist core value system, social system, methodology enlightenment, Key words： ideology