Soil particle size distributions were measured in the typical plantations of in Kubuqi desert by laser particle size diffraction method, and the single fractal and multifractal dimensions were calculated. The dynamics of soil wetting front during irrigation and water redistribution periods were measured through field experiment, and the relationship between wetting front movement and fractal characteristics was explored by means of path and redundancy analysis. The results show:1) During drip irrigation, the horizontal and vertical movement distances of the wetting fronts in Kubuqi desert can be described well by the logarithm functions (R²=0.941-0.990) and the power functions (R²=0.958-0.996). 2) When the volume fraction of sands is higher than 70% and the volume fraction of clays is lower than 2.5% in the soil, the multiple regression model based on the contents of silts and clays can better characterize the 2D water movement distance after irrigation is stopped (R²=0.839-1.000), but it has poor applicability in the process of irrigation (R²=0.243-0.403). 3) The single fractal dimension (D) and the multifractal dimensions such as entropy dimension (D₁), entropy dimension/capacity dimension (D₁/D₀), correlation dimension (D₂) are negatively correlated with the ratio of sands/silts of the soil, while the final volume of wetting body formed by drip irrigation is positively correlated with the ratio of sands/silts of the soil. And D is better than D_0, D₁, D₁/D₀and D₂ to explain the effect of the difference of the ratio of soil sands/silts on the movement of wetting front. There are some functional quantitative relationships of soil water movement in drip-irrigated plantations. When the proportion of sands is higher than 70% and that of the clays is lower than 2.5%, the lower the content of fine particles in the soil, the larger the volume of wetting body formed by drip irrigation. The soil particle size can be analyzed in the formulation of irrigation strategy to save the decision-making cost. Under the environmental conditions similar to Kubuqi desert, when the duration of drip irrigation is 6 h and the flow is 3.0 L/h, the next irrigation should be considered for the Populus popular and Ulmus pumila within 48 h after stopping irrigation, but not for Salix psammophila and Salix matsudana Koidz plantations.