Abstract: This article analyses the results of the experiment on different maize inbred lines with different budding ratio which involves 21 maize varieties in comparison.The experiment results suggest that in the same inbred line,the maize variety of high budding ratio features low electrical conductivity and high seed vigor;on the country,the maize variety of low budding ratio shows high electrical conductivity and low seed vigor.Within different inbred lines,the seed vigor varies a lot though they share the same budding ratio.