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Magnetized water may improve the soil salt leaching efficiency. It is the basis for revealing the mechanism of salt leaching by magnetized water to explore the influence of magnetized water under different magnetic field intensity on the movement of soil water and salt. The effects of magnetized water with 0T, 01T, 02T, 03T and 05T magnetic field intensity on the characteristics of soil water and salt transport were studied through onedimensional vertical soil column infiltration test in the laboratory. The results showed that the soil water infiltration rate and the wetting front migration rate were decreased with irrigation by magnetized water, while the moisture content of the upper soil wetted zone was increased. With the increase of magnetic field intensity, the cumulative infiltration amount showed decreasing trend initially and then increasing. The cumulative infiltration amount was decreased the most when the magnetic field intensity was 03T. Moreover, the magnetic field intensity had a significant influence on the soil water infiltration parameters under the condition of magnetized water infiltration. The soil sorptivity S and saturated hydraulic conductivity Ks of the infiltration model showed the quadratic polynomial relationship with the magnetic field intensity, respectively. When the magnetic field intensity was 028T, both the soil sorptivity S and the saturated hydraulic conductivity Ks were minimized. In addition, magnetized water infiltration could increase the retention time of water in the upper soil, increase the water content of the upper layer soil, and reduce the water infiltration of deep soil. After the magnetization treatment, the salt leaching amount in unit volume of water was increased, and the desalination rate and magnetization desalination intensity were significantly improved. The magnetized water had the best effect on salt leaching when the magnetic field intensity was 03T. The results showed that the magnetic field intensity could significantly affect the characteristics of magnetized water infiltration and soil water and salt transport, which provided theoretical support and guidance for rational use of magnetized water in agricultural irrigation.