A fast swelling superabsorbent composite was prepared in the 10t reactor by aqueous free-radical polymerization using acrylic acid (AA) as the monomer, attapulgite (APT) as the inorganic nano-scale composite, potassium persulfate (KPS)/ascorbic acid as the initiator and N,N'-methylene-bis-acrylamide (MBA) as the crosslinking agent. The results indicate that the optimum reaction conditions were as follows: AA concentration of 42% (w/w), initiate temperature of 50oC, foaming agent content of 0.2% (w/w) and MBA content of 0.1% (w/w), which the absorption rate is 43s in distilled water and the absorption ratio is 16 g/g under 2 KPa in physiological saline. By using the heat originated from the acid and alkali neutral reaction and the polymerization reaction, the active ingredient of the superabsorbent was enhanced from 42% (w/w) to 52% (w/w). Compared with traditional technology, this technology can reduce the vapor consumption and save energy about 1,640,000 kJ/ acrylic acid/ton.