Huazhan is a native restorer line bred in China.Hybrid rice combinations crossbred with Huazhan showed high resistance against rice blast.In present study,62 of blast isolates collected from South China were inoculated to restorer lines Huazhan,Minghui63 and Guanghui998.The inoculation tests revealed that Huazhan was a broad resistant restorer line whose resistance spectrum(RS)was 95.2％.To identified the rice blast resistance gene(s)of Huazhan,we constructed a F2 population derived from Huazhan(as male parent)and Lijiangxintuanheigu(LTH,as female parent)for genetic analysis.