Sorting effect is common in the process of blowing and deposition of dredged mud, which inevitably leads to differences in the distribution of mechanical properties of dredged mud. For the sandy dredged mud, the indoor sedimentation column modeling test was used for sedimentary sorting to form the sorted soil samples in different states, and the compression and permeability properties of the soil body were investigated through the one-dimensional consolidation-permeability test. The results show that the compression and permeability of the soil samples change significantly after sorting, and the compression of the bottom soil sample is obviously smaller than that of the top soil sample; and the permeability coefficient of the bottom soil sample is obviously larger than that of the top soil sample. It was also found that the difference in permeability coefficients after sorting action was related to the pore ratio as well as the fines content, and for soil samples with fines content FC>30 %, a clear quantitative relationship was presented between the pore ratio and the pore ratio at the liquid limit; while for soil samples with fines content FC≤30 % a prediction formula for the permeability coefficient was given.