Abstract: This article took the saline-alkali soil in Dagang District, Tianjin as the object of study and chose ceramicite, vermiculite and zeolite respectively as the salt-isolated layer at the bottom and side wall of planting hole. Based on the treatments, Sophora japonica L. was planted, and then the dynamic changes of soil salinity and growth of plants were measured every month. At the same time, we analyzed the effects of different treatments on the salt reduction and growth of Sophora japonica L. After the whole year measurement, the results showed that salinity accumulation and desalinization of surface soil were influenced by periodic property of local climate conditions. The salt accumulation peak period appeared at the end of spring and summer. Those three salt-isolated treatments had significant effects on the main salt ions, total salt content and growth of Sophora japonica L. . Zeolite was not only the most effective salt-segregation material, but also the most useful material for accelerating the rate of plant growth.