In order to know the resistance of northern spring soybean strains to soybean mosaic virus,data of identification to SMV1 and SMV3 from 2003 to 2007 were analyzed in the paper.19 resistance strains which were resistant both to SMV1 and SMV3 were selected,55 resistance strains were discovered to be resistant to SMV1,and 20 strains resistant to SMV3.It was found that new strains released in Liaoning Province were more resistant to SMV1 or SMV3,most of which were classified as resistant varieties.Whereas new strains released in Heilongjiang Province were less resistant to both SMV1 and SMV3,in particularly most materials were susceptible to SMV3.It was suggested that resistance breeding to Soybean mosaic virus should be stressed in Heilongjiang Province and antigen from Liaoning Province and Jilin Province may be introduced to breed new variety and improve its resistance.