Soil salinization has limited crop growth,development and production which is one of the most serious abiotic stress.Cultivation of salt-resistance crops is to solve a good way of the salinity problem.Through field experiments,salt-resistance capacity of rice grass-maize and its improvement effects on saline soil were studied.The results showed that fine rice grass-maize inbred line of adaptive saline soil have strong growth potential and salt-resistance,salt-resistance capacity is 11.76 g/kg.Based on good,strong,extra strong of growth potential,soil salt content were 15.7%,22.9%,34.5%,respectively.Therefore,after cultivating rice grass-maize,not only fine varieties have salt-resistance capacity,but also improved saline soil has a certain effect.