The historian called Peter Burger divided it into historical avant-garde before and after the first World War (Dadaism, Futurist, Geometric Abstract, etc.) and Neo- avant-garde during the period of forming social foundation that would be ready to accept new forms of art in the USA, the center of capitalism, after the 2nd World War such as pop art and conceptual art including the then emerging avant-garde minimal art. Meanwhile, he interpreted that Neo- avant-garde succeeded the spirit of historical avant-garde. For modem furniture, the avant-garde terminologies are discussed from the aspect of epistemology or symbolism. On the other hand, they would be exclusively used for advertising slogans, however, it is considered as difficult due to vague terms or their characteristics. This study relates the points of historians such as Peter Burger for theoretical proposal and Richard Kostelanetz's point for formal issues, and contracts and arranges the avant-garde terminologies and its characteristics to the meaning of "getting out of the present decadent trend - aiming for future", "transcending the present aesthetic custom - renovation" and "violating the rules already established in the process of entering new areas - freshness of unfairness". The study was meaningful in providing fundamental clues based on the historical discussion and artists for Neo- avant-garde in the 1960s, that is, the mainstream of design at the end of the 20th century in the period when an avant-garde oriented alternative in the 21st century design has been sincerely required overflowed with the fin de siecle phenomenon.