Abstract
This study is to find out the definition of the science of architecture which agree with the ideal of architecture form the roots of Lao-tsus Tao-te-ching. The science of architecture is that of which the architect wants to realise the ideal of architecture in the realities of life. Lao-tsu says that the roots of man and universe is nothing and doing of nothing. Nothing makes sense with constant-nothing and constant-existance, and is named with bright. And becomes the light. We can say that the definition of the science of architecture of nothing. And architecture of nothing is the foundation of the architecture for man. When the architecture of nothing for man agrees with the realities, the action becomes doing of nothing. And it is the very architecture of doing of nothing.