This paper analyzed the evolution characteristics and the fomation machanism of the railway station city--Huaihua not only with the help of urban land use planning map,1:10 000 topographic maps,remote sensing imagery,socio-economic statistical data and other relevant information,but also with ArcGIS 9.2 software platform and statistical analysis software (SPSS 11.5) and some different research methods,such as statistical analysis,spatial patterns analysis,fans analysis,fractal theory. The result shows that city morphology compactness and fractal dimension are low,shape index is excessive. Huai...