Abstract: In order to research the character and the application of high aquasorb in soybean planting, make it has high water absorbency and pollution-free in drought soil to provide the water of soybean growth required, discarded straw as raw material, acrylic fabric and acrylamide as grafting monomer, ammonium persulfate as initiator, N,N’-methylene diacrylamide as crosslinber, muriate added, which mentioned above were used as the production of soybean aquasorb by microwave method. Soybean aquasorb had a great effect on the relief of agricultural drought and increasing the drought resistance of the soybean plant. Meanwhile, it could effectively decrease the influence of soybean yields caused by drought. According to orthogonal experiment, monomer, initiator, crosslinber, add content of muriate, the effect of reaction of neutralization degree on the water adsorption of aquasorb, the effect of the aquasorb soaker on soybean germination rate and degration rate of aquasorb in the soil were researched. The results indicated that: the aquasorb could increase by 15% to the germination in the initial period of soybean sprout. To the mature soybean plant, providing hygroscopic moisture to the soil, could effectively reduced the harm of drought. The soybean aquasorb could degrade gradually in the soil, which could phase down the environmental pollution by making full use of the soybean aquasorb.