The objective of this study was to determine the effect of freezing irrigation with saline water of different salinity on soil water infiltration and salt transport in severely saline-alkali soil. In order to compare and analyze the soil water infiltration characteristics and desalination effect, this study adopted an indoor simulation test of soil column made of organic glass. Six treatments with 3 different water quality (distilled water, 3 g/L brackish water, 10 g/L saline water) and 2 different methods (freezing irrigation, direct irrigation) were set up. The results showed that:(1) The initial infiltration rate of freezing irrigation was 8.2, 4.6 and 5.8 times higher than those of direct irrigation under three irrigation water quality. Under the freezing irrigation mode, the higher salinity of irrigation water, the faster soil infiltration rate. (2) Kostiakov model was suitable for fitting the soil water infiltration process under different saline water under freezing irrigation. Horton model is suitable for fitting the soil water infiltration process under direct irrigation. (3) The soil moisture contents in 0-60 cm soil layer of direct irrigation increased by 1.4%~6.3%, 1.6%~3.6%, 0.9%~7.6% respectively compared with those of freezing irrigation under the three irrigation water quality. (4) The desalination effect of 0-30 cm soil layer was more significant under each treatment, the salt was moved to 60 cm soil layer continuously, and the desalination rate of each treatment decreased gradually. In 0-30 cm soil, the desalination rate of fresh water under direct irrigation was the highest, which was 93%~97%, followed by 3 g/L of freezing irrigation, which was 87%~91%. In 50-60 cm soil, the desalination rate of fresh water under freezing irrigation was the highest, which was 13.3%, followed by 3 g/L brackish water freezing irrigation, which was 9.1%. Comprehensive consideration, salint water of 3 g/L with freezing irrigation could improve soil water infiltration rate, effectively reduce soil salt content in 0-60 cm.