Abstract: Quaternary sedimentary strata frequently contain formation soils,therefore understanding the features of how tiny particles in these soils migrate and deposit is crucial for groundwater recharge and grouting projects. Using an indoor,one-dimensional sand column test setup with three different grain size ranges of sandy soils and 21 common stratification techniques,the migration deposition process of suspended particles in saturated sand layers was examined. The findings demonstrate that the penetration curve,particle deposition rate,and median particle size of suspended particles are significantly affected by different stratification sequencing. The penetration curve of suspended particles creates a secondary peak when small-size porous media covers large-size porous media. The number of particles deposition reduces as migration distance rises,but the median particle size of deposited particles increases instead; When large-sized porous media cover smaller-sized porous media,the penetration curve of suspended particles has only one peak,the amount of particles deposited increases suddenly at the stratification,and the median particle size of deposited particles decreases in the middle of the sand column. According to the variation of permeability coefficient,the suspended particles movement state is classified as: sedimentation,stripping transport.