Abstract: The straw buried to improve saline soil was used in this experiment,through analysis of soil samples after straw buried to study the effect of different straw buried on saline-alkali regulation. The results showed that the straw buried could destroy the continuity of the capillary in study area,reduced the water evaporation of deep soil,inhibited salt accumulation on soil surface,and reduced the salt of plow layer.Buried the straws at 30 cm could significantly reduce the salt content in the plow layer,the desalination rate reached the 61.2%,the desalination rate was 47.1% under the condition of buried the straws at 50 cm and the desalination rate was 45.5% under the condition of buried the straws at 70 cm, so it was the best plan to bury the straws at 30 cm as to take into account the low costs.