Indian Chan is based on samatha meditation (Samatha) and Vipasyana, which means that in each moment the righteous awakeness in minds. In contrast the Chinese Chan is based on the the theory of Buddha nature which announces that self-nature is the True Buddha".As it announced that only you reach your self-nature which is true Buddha,you will really get the ultimate truth and the thorough freedom.Just on the basis of such philosophy and ideas,Chan of instant awakeness started its routine whose milestone is the formation of "Platform Sutra." "Platform Sutra." Is regarded as an Buddhist classic which best represent Chinese characteristic.It is the first and unique work named as sutra written by Chinese Buddhist monks."Platform Sutra."has its history of Inheritance for over one thousand years and embrace the tradtion of the deep cultural heritage,whose values in Chinese tradition culture has been fully proved, and its significance far beyond the original scope of religion.With its special system of thoughts,"Platform Sutra" directly enlighted the revolutionary reformation of Chinese Buddhism and has greatly impacted on other culture,which can be found in its effect in China as well as in Korea and Japan.If we wish to choose one classic which most influenced the Chinese Buddhism,it's no doubt that "Platform Sutra." Even in the whole history of human culture,"Platform Sutra "Is one of the most influential works. In this dissertation we try to focuse on the systemtic analysis on the evolution and impact of "Platform Sutra"(especially the influence in Korean Chan)on the basis of its thoughts. Seven parts comprises this dissertation: In the first chapter,the origin of Platform Sutra is di
