Abstract: 【Objective】 To investigate the effect of insertion subsurface drip irrigation on infiltration and water-salt distribution of saline soils, 【Methods】 To compare and analyze the effect of different drip head flow rates and drip head burial depths on soil wetting peak transport and water and salt distribution inside the wetted body through indoor soil column tests with saline soils that return to salt in spring in the Alar irrigation area. 【Results】 The results showed that under the same infiltration time and drip head flow rate conditions, subsurface drip irrigation increased the wetting peak depth, wetted area, average soil water content and desalination depth inside the wetted body than surface drip irrigation.Compared with CK treatment, soil wetting peak depth and soil wetting area increased by 20.89% and 18.01% in T₁ treatment, respectively; soil wetting peak depth and soil wetting area increased by 45.78% and 19.06% in T₂ treatment, respectively.mean soil water content within the wetted body increased by 2.48% and 1.37% in T₁ and T₂ treatments, respectively.The soil desalination depth increased from 10 cm to 25 cm.increasing the drip head burial depth and flow rate was able to increase the soil water holding efficiency, which was 2.56%, 3.82%, 9.81% and 13.35% for the 0-25 cm soil layer in treatments T₁-T₄, respectively.The drip head flow rate was small, and the soil salt accumulation rate was 67.98% with the increase of drip head burial depth.the soil salt accumulation rate of 0-5 cm soil layer depth in T₂ treatment was 67.98%.If the drip head flow rate was increased, the soil desalination depth and desalination rate increased with the increase of drip head burial depth, and the maximum soil desalination rate reached 79.15% at 0-30 cm soil depth in T₄ treatment. 【Conclusion】 With the goal of increasing soil wetting area, soil desalination area and desalination rate, the drip head flow rate of 0.6 L/h and burial depth of 15 cm were optimal for the treatment.