Soil water infiltration movement is an important part of the evaluation of surge-root irrigation efficiency. Based on the theory of saturated-unsaturated soil water movement, we simulated the soil water infiltration under surge-root irrigation with a double-point source by Hydrus-3D and compared the simulated results with the field measured data. At the same time, the typical peach trees were selected and the optimal arrangement parameters of the surge-root irrigation were predicated. The study results showed that all the correlation coefficients between the simulated and the measured values of the soil wetting front of the surge-root irrigation and soil water content after irrigation were always greater than the critical correlation coefficient, RMSE was less than 1.5 and 0.05, respectively, and the P values of T-test were greater than 0.05. It indicated that Hydrus-3D could be used for soil moisture migration simulation of surge-root irrigation with reclaimed water. Using the Hydrus-3D model, the results showed that the optimal depth was 35, 35, and 45 cm respectively for peach tree with 1-year, 5-year and 10-year old, and the corresponding spacing was 40, 50, and 40 cm respectively.