Abstract: Preliminary study the change of nutrients of saline soil and cotton growth under the application of soil amendment, by using of 4 kinds of soil amendments in field experiments to identify the change of growth and yield of cotton in saline soil and changes of saline soil nutrient. Results showed that, after input this four kinds of modifiers, soil organic matter, available nitrogen, available phosphorus and available potassium were all increased relatively by different degrees, indicating that these amendments which were used in saline soil for cotton grown can improve the soil fertilization effects. The effects of soil DS1997 and phosphorus gypsum to saline soil amendments were significantly compared with other two amendments. After using the soil improving in saline soil, the soil fertility was significantly improved, and promoted the growth of cotton, cotton biomass yield and economic yield was increased to different degrees. Soil amendments can effectively reduce the salt damage, improve soil quality, and improve the production capacity of the land.