Xanthan gum-g-acrylic superabsorbent resin was prepared by inverse polymerisation using acrylic acid as graft polymerization monomer,cyclohenxane as continuous phase ,N,N-methylene-bis-acrylamide as crosslinking agent and potassium persulfate as initiator. The influence factors of synthesising superabsorbent resin such as the weight ratio of acrylic acid and xanthan, amount of initiator（KPS）, amount of crosslinking agent, degree of neutralization of acrylic acid and polymerization temperature were studied .Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and thermogravimetric analyzer(TGA) were used on characterization of the superabsorbent resin. The results showed that: The poly-acrylic acid molecules linked to the molecular chain of xanthan gum through graft co-polymerisation, the preparation of XG-g-PAA superabsorbent resin Under the optimum conditions has good properties of water absorption and salt resistance,the retention performance was inproved in high temperature, the highest water absorption up to 845ｇ.ｇ-1, 0.9% NaCl solution up to 96.3ｇ.ｇ-1，percent grafting up to 126.5%,grafting efficiency up to 82.6%.