Abstract
As a short lived group, ABC had an important effect on the design of Modern architecture. Because it played an important role in the foundation of CIAM, and affected the style of Internationalism and Neue Sachlichkeit in Modern architecture. ABC group was the result of Elementarism and Constructivist International. And El Lissitzky was a central figure in the birth of ABC group as a Constructivist. ABC's design resembled the design of ASNOVA, but it modified it as a more real and functional design. This study amins at the analysis of the effects of ABC group on the design of Modern architecture.