Abstract: To explore the field resistance of double-cropping late hybrid rice to bacterial leaf streak (BLS) and its occurrence characteristics in Hunan, by systematic field investigation and statistic analysis from 2014 to 2016, we studied the occurrence of BLS in the double- cropping late hybrid rice fields and monitored the epidemic dynamics in Hunan, and created the curve graphs of occurrence dynamics and progress of BLS. The results showed that among twelve hybrid rice varieties, only four varieties‘Shenliangyou 5814’,‘Tianyou 3301’, ‘Xinrongyouhuazhan’and‘Wuyou 308’had excellent resistance, and the other eight varieties were susceptible to BLS, which suggested that the field resistance of late hybrid rice to BLS in Hunan was very poor as a whole. The beginning phase of BLS appeared in the middle of August, approximately from August 11 to 15 and its epidemic peak periods were in the early and middle of September in Hunan. The above results would provide a scientific basis for timely preventing and controlling BLS of double-cropping late hybrid rice in Hunan.