In this paper,a measure of double scale in regional architecture design is given,that is the form topology and deep structure transformation. This measure is based on the original local architecture, and extracts the principle from both substance and mentality level. It is not only the beginning of the architecture design but also the main approaches that check the expression of the regionalism on the scheme. The form topology has several aspects, namely the ground, body and plane symbol etc. The deep structure transformation means the change of aesthetic conception,history context and behavior pattern. At last, an existing projection, the Longyan railway station is taken,which symbolizes the Kejia culture, for further discussion.