In order to study on the seismic behavior of reinforced block masonry shearwall buildings, a simple similarity principle of model test is adopted to construct a 1/4 scale three-story reinforced block masonry shearwall building, and test is carried out under low cyclic lateral loading.

Through philosophical proving and analysing scientific history cases,it is demonstrated that the applications of simple principle don t have strong ontologic basis,and that simple principle and the truth are not the same thing.

a Simplicity Principle in Theory：the Unity of Truth，Good and Beauty in Science;

This paper traces back to simplicity principle s history dues,to make its foundation understand deep-going,discuss its values,and we believe that simplicity principle will continue to play important r.

The article discusses the development and formation of simplicity principle from the ancient Greece to present-day,the object of this principle as a scientific theory and the significance of methodology for this principle can be an acceptable and evaluable theory or hypothesis and a selection criterion.

According to these views, this article compares the differences of the simple principle between the west to the East and pointed out the characters and defects in the simple principle of Zhouy.

Even in ancient China, science and technology were rejected, the simple principle in Chouying still exerted widely influence such as world outlook in philosophy, methodology in politics and religion, understanding in morality, writing skill in literiture and art and history and so on.