Abstract: Superoxide dismutase (SOD) is one of the important purger eliminate O2- out of body.Its shortened form is SOD.Study the physical and chemical properties of raspberry SOD,the researches included the sensitive experiment of SOD, the maximal ultraviolet peak of SOD and the effect of pH value, and metal ion on SOD from the raspberry. All the work done provided foundation for further reseaches of SOD and its application in materia medica,health food and cosmetic. Coming to a conclusion, SODⅠ,SODⅡand SODⅢ are identified as Mn-SOD because they are not sensitive to KCN and H2O2;the maximal ultraviolet peak of SOD is 280 nm.The effect of temperature is steady,but temperature effect on SODⅢis greater, that of SODⅠandSODⅡ is little.The specific activity of SOD is high in pH value range from 7 to 9and SOD activity easily lose under too high or too low pH value..The effect of metal ion on them shows no difference. The three SODare actived by Al3+、Cu2+、Mg2+、K+、Ca2+、Zn2+and restrained by Pb2+、Fe3+、Sn2+clearly.