Abstract
The paradigm of contemporary times became different from paradigm of modem times. The change of paradigm is caused by the side effect of paradigm of pre-times. It could be said that contemporary paradigm is pluralism. In the forms of contemporary building and interior design, the informal form is the result of pluralism. This study is researching and analyzing the informal design tendency in the interior space composition of contemporary architecture. the 1950's free form movement, 1960's Informal movement and pluralism after 1970's affected the latest informal forms. The tendencies of contemporary informal design are organic-degital tendency and deconstructive tendency. Along this two kinds of tendencies, I studied the specific characters in expression and analyzed some natural-degital, deconstructive building.