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It is the basis for revealing the mechanism of the effect of magnetized brackish water on soil water movement parameters to predict the water movement of magnetized brackish water in field. A one-dimensional horizontal soil column experiment was carried out to study the horizontal absorption characteristics of magnetized brackish water with different salinities (0.14g/L, 2g/L, 3g/L, 4g/L and 6g/L) and its influence on soil water movement parameters. The results showed that the final cumulative infiltration and the depth of wetting front of magnetized brackish water were decreased significantly, while the average moisture content of the final wetted body was increased by 2.03%~6.11%. Magnetized brackish water infiltration could increase the soil water holding capacity, which was beneficial to improve the distribution of soil moisture. The absorption rate S in PHILIP infiltration model of magnetized brackish water was 7.71%~12.11% lower than that of unmagnetized brackish water, and the relationship between saturation conductivity Ks and relative saturation conductivity ΔKs of magnetized and unmagnetized brackish water and salinity of infiltration water was quadratic polynomial. After magnetization of brackish water, the shape coefficient n of BROOKS-COREY model was decreased relatively, while the suction hd was increased relatively. The soil water content that can be absorbed by the same soil water suction was increased, while the unsaturated conductivity and its growth rate were decreased. The saturated diffusivity Ds and the initial diffusivity soil water content were also increased. The results showed that the soil water movement parameters were changed in the process of magnetized brackish water infiltration, and its effect was closely related to the salinity of brackish water, which provided theoretical support and guidance for the rational use of magnetized brackish water irrigation.