Three level of peat,10 level of sapropel and 3 levels of peat ＆ sapropel were respectively added into aeolian sandy soil to plant Chinese cabbage in the pot.The physical and chemical properties of soils with different treatments before and after planting were compared.The results showed that 8-12% peat or 32% sapropel or their mixture has obvious effect on improving of bulk density and pH value.Meanwhile,it obviously increases the content of nutrients and physical clay.This can be proved whether it is before or after experiment.But nitrogen should be added,phosphate and potash can be add a little or no if any crop was planted in the improved soils again.