[Objective] The aim of the research was to provide scientific basis for further research and utilization of the antioxidation effect of polysaccharide. [Method] Polysaccharide was extracted from Zingiber mioga Rosc by the method of heat leaching. Based on determining the scavenging activity of water soluble polysaccharide in Z.mioga on organic free radical DPPH and its scavenging effect on NO2- under simulated gastric juice conditions, and on analyzing its antioxygenic property on fats and oils, the antioxy...