Ginseng yield is decided soil physicochemical environment of ginseng growth.Good soil composition can avoid soil erosion.Soil structure and keep water character of ginseng soils was studied,the reasons of old ginseng soil physical properties worsen was analyzed,the particle composition of ginseng bed soil were measured.The percentage of dry granule,wet granule,water stable aggregate,micro-aggregates in the ginseng bed soil were measured and computed.Rupture structure ratio of the ginseng bed soil was calcul...