Soil erodibility serves as a major parameter for soil erosion prediction and land use planning,re- flects the sensitivity of soil during the erosion process.The paper focused on the black soil in northeast Chi- na,studied the soil particle distribution under different land use,and calculated the soil erodibility using the empirical formula.And then the correlation analysis between soil erodibility and interrill erodibility,rill erodibility,critical shear were carried in order to apply predicted models well.The results show:(1)The change of soil clay content in every layer is not obvious,and along with the soil layer increasing,the silt con- tent reduces but the sand content increases;(2) Expect for the artificial forest,the soil erodibility of the oth- ers land use profile,presents the enhanced trend along with the increasing soil depth;(3)For cropland,the soil erodibility (K) are significantly correlated with the rill erodibility (K_r) and the critical shear (T_c),but the correlation between soil erodibility (K) and interrill erodibility (K_i) is reduced.