guar gum-g-poly(acrylic acid)/loess(GG-g-PAA/LOESS) superabsorbent composites were prepared by graft polymerization in aqueous solution using guar gum (GG), acrylic acid (AA), loess as raw materials, ammonium persulfate (APS) as initiator and N,N-methylenebisacrylamide (MBA) as crosslinker. The structure of superabsorbent composites was characterized by FTIR and SEM. Effects of loess content on swelling capabilities and swelling kinetics of superabsorbent composites was studied. Water-retention properties at various temperatures, reswelling capabilities and water absorbency at various pH solutions of superabsorbent composites were also investigated. The results indicated that GG and LOESS participated in graft polymerization reaction with AA. The prepared GG-g-PAA/LOESS superabsorbent composites have the good properties of water absorbency, water absorption rate, water-retention and reswelling. In addition, the superabsorbent composites showed excellent pH-stability in various pH solutions.