Raymond Williams.one of the western countries influential Marxist believer,founds cultural materialism which iS a new type of western Marxism theory foYln in accordance with Marxism.and accordingly.develops his own cuhura1 materialism：Especially in constructing the cultural materialism theory.he states the original viewpoint on culture.And he reviews and explains“base and the superstru cture” conception.Understanding the two core conception iS the key to understanding cultural materialism.