There are lots of elements of ancient garden in traditional garden that have disappeared today. For example, the layout with pond, man-made island and bridge, as central figure; white sandy brink; artificial earth hill; arranged natural and simple stone; scenery of a view from a far distance; the design by imitation from famous sight etc. When we compare the elements of ancient garden with the traditional gardens of late imperial China, the outstanding difference between both can be found. After analyzed the represented technique of stone arrangement of traditional gardens, the following result was obtained in this article. That is the garden's styles changed from about Sung Dynasty. The traditional gardens of late imperial China constructed artificial hill, but mainly used stone, not earth. They always chose unique stone that have strange shape which can be found from famous Tai-Hu Lake.