Microwave-assisted extraction is adopted to extract polysaccharide from Anji White Tea.sulphuric acid-phenol method was used for coloration,and the content of polysaccharide was determined by the spectrophotometer at 540 nm.The effects of Microwave intensity,temperature of extraction,Microwave-treating time and the influence of Microwave-treating time were studied.It was found that the order of elements influencing the extraction was:KV of Microwave﹥Microwave-treating time﹥temperature of extraction﹥time of extraction.The optimized condition for the extraction was:KV 240 W,Microwave-treating time:4 min;extracting at 65℃ for 3 h.Under the above conditions the extracting yield of polysaccharide was 16.23%.Anji White Tea polysaccharide exhibits a significant potency in inhibiting the hemolysis of red blood cells itself and H2O2 induced hemolysis.With the increase of polysaccharide's concentration,the inhibition of auto-oxidation of red blood cell hemolysis increased gradually.When the concentration was up to 7mg/mL,the hemolysis was 13.691% which equals to Vc with same Concentration.When the TPs was less than 7 mg/mL,its inhibition of hemolysis of red blood cells was weaker than Vc in same concentration.The inhibition of hemolysis due to H2O2 by 7 mg/mL TPs was 22.781% which equals to 3mg/mL of Vc.The antioxidant of TPs was not as good as the same concentration of Vc solution.