Bacterial blight（BB），as a destructive disease of rice worldwide，has seriously destabilized rice yield. The most effective and environmental-friendly method in disease control is to explore and utilize the BB resistance，whereas the known resistance genes to date are limited. Wild rice populations host tremendous resistance genes，and identification of resistance genes to bacterial blight is of great significance in rice genetic improvement. In this research，the resistance to BB in common wild rice population in Guangdong province was analyzed. Although different levels of resistance to BB strains PXO99 were observed，Guangdong wild rice populations presented resistance or high resistance to the typical pathogenic strain type IV race in Guangdong. According to the genotyping result with functional markers，three sub-populations were revealed containing resistant gene Xa21，four sub-populations containing Xa4，five sub-populations containing Xa7 and Xa27. Xa23， Xa10 and Xa26 were detected in 11，12 and 16 sub-populations，respectively. The resistance genes xa5 and xa13 were not found，but 19 sub-populations contained Xa1 or its homologous gene. Resistance spectrum analysis showed that five common wild rice accessions from HY2，DB2 and GZ2 populations might contain new BB resistance genes. For BB strain race-IV，the results of variance analysis demonstrated that the BB resistance level of Gaozhou common wild rice was significantly higher than that of Huazhou，Leizhou and Taishan，while the resistance level of Huazhou and Taishan common wild rice was significantly lower than that of Lufeng. For PXO99 race，there was no significant difference in the resistance level among all wild materials. Collectively，this study provided a basis for further exploring and utilizing the excellent BB resistance gene resources of common wild rice in Guangdong province.