Taking the yield of polysaccharides as the index,the extraction process of polysaccharides from fruits of Ribes stenocarpum Maxim (RPs) were optimized by single factor test and response surface test.The results showed that the maximum yield of polysaccharides was obtained under optimal extraction conditions of 40 °C extraction temperature,30 min extraction time,with solid-liquid ratio of 1∶30 g/mL,under these conditions,the content of polysaccharides were 115.32 mg/g;Rheological properties research showed that the RPs belonged to a non-Newtonian fluid,exhibited shear thinning,when the mass concentration of polysaccharides was 1.0%,RPs showed the same rheological properties as 0.1% sodium carboxymethyl cellulose solution,and the over-acid and over-alkali environment would not change its rheology characteristics;Antioxidant test results showed that the RPs had potential antioxidant capacity.The scavenging capacity of DPPH free radicals was lower than that of ascorbic acid,and the scavenging capacity of hydroxyl free radicals was significantly higher than that of ascorbic acid.The results of this study are expected to provide a theoretical basis for the development and utilization of RPs in the food field.