More than 1500 cultivated Varieties （or lines） of Spring Soybean and 1000 wild Soybean lines were identified by artifitial inoculation with SMV. None of these cultivars were immue, and 2％ resistant material of cutivated varieties were identified only. None of wild Soybean material were resistant. Cultivated varieties were more resistant to SMV than semi—wild Soybean, and the semi—wild species more than wild soybean, Resistance of cultivars at seedling Stage was consistent with growing stage. A few of cultivars were also resistant to seed—mottling.