Based upon the case of Qianlianghu polder in the Dongting Lake region,soil physical properties of bulk densities,porosities,water contents,compositions and fractal characteristics of soil aggregates was studied and evaluated synthetically through gray incidence analysis in five typical patterns of land use under converting polders back into wetlands,which included forestland (Ⅰ),garden land (Ⅱ),dry land (Ⅲ),paddy land (Ⅳ) and waste land (Ⅴ).The results showed that soil bulk densities,capillary porosities,non-capillary porosities,total porosities,soil natural water contents,soil capillary moisture capacities,mean weight diameters and fractal dimensions of soil aggregates in 0～50.0 cm soil layers under different patterns of land use were 1.02～1.65 g/cm3,33.04%～61.70%,2.15%～25.35%,38.40%～64.96%,17.07%～38.33%,23.22%～64.00%,1.76～5.09 mm and 2.272 8～2.638 8,respectively.The biggest variation coefficient (83.51%) was existed in noncapillary porosities and the smallest (3.61%) in fractal dimensions of soil aggregates in all soil physical indexes.In 0～25.0 cm and 25.0～50.0 cm soil layers,the waste land had the highest soil bulk densities,the lowest non-capillary porosities,total porosities,soil natural water contents and soil capillary moisture capacities,and its capillary porosities were higher than that of garden land.The order of gray incidence degrees of soil physical properties were Ⅱ (0.776 3) ＞Ⅳ (0.762 1) ＞Ⅰ (0.698 6) ＞Ⅲ (0.659 2) ＞Ⅴ( 0.618 3),which showed that the soil physical characteristics was the poorest in waste land than that in other land use patterns.