[Objective] The influences of soil texture types and parameters of banded sand ditches on soil infiltration processes were studied in order to provide scientific evidence for the design, operation, and management of sand ditch rainwater harvesting projects. [Methods] HYDRUS-2D/3D software was used to establish a mathematical model for soil water movement in a banded sand ditch, and the reliability of simulating the soil infiltration process in a banded sand ditch model was verified using laboratory experiments. The cumulative infiltration and movement of the wetting front under different influencing factors in a banded sand ditch were simulated and analyzed. [Results] The simulated results were consistent with the measured data. The results showed no significant differences, indicating that the established model and its solution method can effectively produce the numerical values of cumulative soil infiltration and wetting front movement at different times in banded sand ditches. There was a significant increase in infiltration in homogeneous soil filled with banded sand ditches. The original soil texture, sand ditch spacing, sand ditch width and sand ditch depth all significantly impacted infiltration rate. Infiltration rate decreased with an increase in the original soil saturated hydraulic conductivity and sand ditch spacing, but increased with an increase in sand ditch width and depth. The soil-wetting front profile formed a U-shaped pattern with a lower front and a higher back. With time, the U-shaped side-wetting front gradually approached the intersection of the sand ditch, and the top plateau gradually disappeared. The original soil texture significantly impacted the migration distance of the wetting front, which increased with an increase in the original soil saturated hydraulic conductivity. Sand ditch depth significantly impacted the shape and distribution of the wetting front. With an increase in sand ditch depth, the U-shaped pattern stretched vertically, and the wetting depth on the left side increases significantly. The change in wetting depth on the right side was minimal. Sand soil texture, sand ditch spacing, and sand ditch width had relatively minor impacts on the migration distance of the wetting front. [Conclusion] Banded sand ditch structures can significantly improve soil infiltration capacity. Soil texture types and sand ditch structure parameters have different effects on soil cumulative infiltration and wetting front migration distance.