Objective: to investigate the effect of gorgon polysaccharide on the rat’s sports ability and myocardial oxidation resistance ability. Method: Rats were divided into control group and low-dosage, medium-dosage and high-dosage groups.gorgon polysaccharide solution of 100, 200,300 mg·kg-1·d-1 was given for 21 days.The exhaustive swimming time was observed, the content of superoxide dismutase (SOD), malondialdehyde(MDA) and glutathione peroxidase(GSH-Px) was assayed. Result: Gorgon polysaccharide could lengthen the exhaustive swimming time and reduce the content of MDA and increase the content of SOD, MDA and GSH-Px. Conclusion: Gorgon polysaccharide has obvious function on increasing sports ability and myocardial oxidation resistance ability.