In this paper, we took the densely inhabited districts as the developed areas. After making clear the expansion over time, we clarified the relationship between natural environment (geographical features, surface soil, the altitude and gradient) and built environment (densities of buildings and roads). Moreover, comparing analysis was conducted between gradient and shaking in order to analyze the danger of landslide with the expansion of developed areas. The comparing analysis was also conducted between damage of wooden houses and narrow roads in order to analyze the change of victims for collapse of houses and the change of danger concerned to rescue.
