The increase of the saline-alkali land area year by year has a negative impact on the growth and yield of rice.An in-depth exploration of related QTLs is of great significance and practical value for the cultivation of rice salt-alkali tolerance.To study QTLs controlling salt-alkali tolerance,salt-alkali stress on Wuyujing 2,Zhenshan 97 and their DH lines were conducted,and the results were compared with the detected QTLs to find the regions with the similar locations.The results of this study provide important basis for breeding salt-alkali tolerant rice,and provide important reference for mapping salt-alkali tolerant QTLs in other growth stages of rice.