Abstract: Sprinklerg irrigation salt-leaching experiments were carried out on Castal Saline-alkali Soil for evaluating its effect on amelioration of total salt content in different soil layers.The result of this experiment showed that there are similar effects between the amount of water and disalting effect,with the increase of the water desalting effect were better. The change of soil salinity were similar after sprinkler irrigation salt-leaching in different soil layers. Sprinkler irrigationt salt-leaching could reduce the soil salt content of different soil layers in the soil depth range between 0 and 100 cm. but significant differences of desalinization rate were observed at a soil depth of 0 ~ 100 cm among different soil layers. In the process of sprinkler irrigation salt-leaching, the soil salt content in the upper soil layer were well leached, and moved down to the subsoil, where the soil salt content increased sharply. The soil salt content of different soil layers were decreased range from 2.04% to 56.72%.The sprinkler irrigation of desalinization rate were decreased 55.34% and 56.72%, 53.80% and 48.53%, 20.89% and 25.05%, 2.04% and 5.24%, 3.59% and 5.63%, 6.59 and 7.18% in 0 ~ 10cm, 10 ~ 20cm, 20 ~ 40cm, 40 ~ 60cm, 60 ~ 80cm and 80 ~ 100cm soil layers, respectively. In particular, the 0 ~ 10cm and 10 ~ 20cm soil layers had the best effect in the process of salt-leaching, and the desalination rate were 48.53% and 56.72%.TheSdesalinationSrateSof different soil layers were decreased asStheSincreaseSofSsoilSdepth. Besides, water use ef ficiency were hig hunder sprinkler irrigation condition and it is very important for freshwater resources relative lack of coastal saline-alkali soil. Thus, this research is meaningful for completing irrigation technology to best utilize coastal saline-alkali soil and it will provide a technical support for developing a complete and systematic