To reveal the soil developmental characteristics on the erosive weathered granite slopes, soil samples of a typical weathering granite slope in Zhejiang Province were studied by the methods of CT scanning technique, X-ray fluorescence spectrometer and laboratory soil physicochemical properties test based on the principles of soil genesis and water erosion. The results showed that the total developmental degree of the soil samples was weak because the varying difference between the up and bottom layers was very small and the soil level-development was not obvious. The weathering intensity displayed an order of bottom profile < middle profile < top profile, which was just opposite to that in terms of the erosion intensity. The physical weathering indexes increased significantly with soil depth while the desilication process weakened. The varying range of chemical weathering intensity was not significant in the all soil profiles and it was different from the local zonal soil development which gave priority to chemical weathering features. Physical and chemical weathering indexes had the equal effect on describing the soil developmental characteristics. Water erosion affected the soil weathering processes and hindered the soil development to typical zonal soil. The maximum weathering intensity was between the surface layer of 20-40 cm, which indicated that the soil layer of 0-40 cm was greatly affected by water erosion.