Abstract: Abstract: In order to utilize the resource of the rice in Heilongjiang Province resisting against the rice blast, we classified some japonica rice cultivars of Heilongjiang province according to the resistance to the blast using 7 stable pathogenicity Japanese strains. We inferred genetic types of parts of the species of the rice based on the analysis of their reactions to the comparison of 12 differential strains. As a result, we classified 141 rice cultivars into 39 ones, and primarily inferred the genetics types of 60 species, which has provided the cultivars with resistance source and paved the basement for carrying out the analysis on the resistance of the rice to the blast.