Four R₁ lines of transgenic rice and check variety "Fengyou 516" were treated under different salt stress.Four indexes and PCR detection were determined and analyzed.The results showed that 1) the ratio of negative numbers to positive ones of PCR detection was not completely conform to the first Mendelian law;2) The plant height of transgenic R₁ generation was higher than non-transgenic plants under salt stress;3) The activity of BADH of transgenic R₁ plants increased greatly while that of non-transgenic plants was undetectable and 4) Relative electronic conductivity and leakage rate of macromolecules of transgenic R₁ plants was lower than non-transgenic plants.This indicated that the BADH gene already expressed in the transgenic R₁ generation.These results can contribute to the rice breeding in the future.