Abstract: In order to select the varieties of salt-tolerant and high-yielding salt-tolerant rice suitable for planting in coastal saline-alkali soil, five varieties were selected, which were salt rice 10, salt rice 12, nanjing 9108, 11k93-1 and 11k93-2.Field comparative experiments were conducted in coastal saline-alkali soil to observe the salt tolerance of different salt-tolerant rice and the improvement effect of planting on coastal saline-alkali soil. The results showed that different varieties of salt-tolerant rice had differences in yield, salt-tolerance, speed of reactivation and disease resistance.The yield per unit area is 350.2~461.8Kg/ mu.Salt rice 10, 11k93-1 and 11k93-2 had the best salt tolerance, followed by salt rice 12, and nanjing 9108 had the worst salt tolerance. Salt rice 10 has strong salt resistance, quick green tree regeneration and comprehensive characters.11k93-1 and 11k93-2 showed strong salt resistance, with red bacterial plaque and normal growth. Salt rice 12 had moderate salt tolerance and slow green regeneration.The salt resistance of nanjing 9108 is poor, and it turns green slowly. Combined with soil salinity data analysis, salt-tolerant rice planting can effectively reduce soil salinity and control the occurrence of surface soil resalt.The soil salinity was controlled below 3‰ in the whole process of rice growing, and the soil desalination rate was 65.41% ~ 74.22% before and after planting. This study can provide reference for planting salt-tolerant rice and its improvement in large area of coastal saline-alkali soil.