Abstract: Setting sample plot in Jigongshan mountain natural deciduous oak forest, the soil carbon density and storage in deciduous oak forests were investigated, the carbon storages of shrub, herb, and litter were measured, and the biomass and carbon storage of tree layers were further estimated by biomass equtions. The results suggested that the total carbon storage of hard wood oak forest ecosystem was 156.59 t·hm^-2, and the carbon stroage of each layer was significantly different in the order of tree layer (81.65 t·hm²) > soil layer (66.13 t·hm^-2) > litter layer (7.50 t·hm^-2) > shrub layer (1.09 t·hm^-2) > herb layer (0.23 t·hm^-2). Soil carbon stroage significantly increased with altitude, and decreased with depth (P< 0.05).