Soybean mosaic virus (SMV) is the main pathogen of soybean virus diseases in north-eastern provinces of China Strains 1 of SMV is the most prevalent and dominante of these strains of SMV in the northeast regions. Strain 3 with more infection potential is a severely virulent strain. In future, the aim of resistant breeding for resistance to Strains 1 and 3 of SMV Should be emphasized.