Novel gum arabic （GA）graft 2-acrylamido-2-methylpropanesulfonicacid (AMPS) and attapulgite (APT) biomass resin (GA-g-PAMPS /APT) was synthesized by grafting polymerization using microwave irradiation. The structure and thermal stability of superabsorbent resin were characterized by FTIR, XRD and TG , respectively. The effects of various saline and pH solutions on swelling properties were investigated，and the swelling rate and reswelling capacity were also evaluated. The results showed that GA, APT and AMPS produced the grafting copolymerization reaction. The resin containing w(GA)=7.5% and w(APT)=10% showed the highest water absorbency of 783 g/g and 91 g/g in the deionized water and in normal saline, respectively. The resin showed excellent responsive properties and reversible characteristics in pH and salt solutions. The introduction of APT into simultaneously the polymeric network obviously improved the thermal stability, the swelling rate, reswelling capability and pH resistant property.