Identification of 115 main rice varieties collecting from Jilin Province were conducted with vitro inoculation by using 22 Magnaporthe grisea isolated strains.The results showed that 98.26% of rice varieties can be infected by Magnaporthe grisea.,Except 2 rice varieties can not be infected,which account for 1.74%.We also have found that some varieties were infected by many strains,but others by one or several strains.Pathological ability of 22 strains was mostly controlled less than 40%.