Aiming at the problem of low irrigation efficiency caused by wide border fields and large blocks in the Hetao Irrigation District, in order to explore suitable technical parameters of border irrigation under changing conditions, based on the typical experiments of Shenwu Irrigation Area in Hetao Irrigation District, different irrigation design schemes were used to compare typical sandy soils. The irrigation quality of the field block (length×width was 80m×25m) was evaluated, and the sensitivity changes of different variable parameters to the optimal irrigation performance indicators were analyzed on the basis of the WinSRFR model simulation. The results showed that when the size of the sand border field (80m×25m) was large, the irrigation effect was poor, and at the medium flow rate (into the border flow Q=20L/s,single width flow q=0.80L/(m·s)), reducing the field area of the tail by 25% (ie: changing the water percentage from 1.0 to 0.75) can save 40% of the irrigation time, and reduce 16% of the irrigation water leakage loss during the flow of water. After adopting the improved field size, irrigation time and irrigation design scheme, the irrigation effect was significantly improved compared with the typical field. The vertically divided field (80m×12.5m) was at a larger flow level (Q was 26~30L/s, q was 2.08~2.40L/(m·s)), irrigation efficiency was increased from 67%~80% to 97%~99%, irrigation uniformity was increased from 0.59~0.79 to 0.84~0.95, water storage efficiency was decreased from 1.17 to 0.76, and it can save more than 20% of the current irrigation time, and the medium flow rate (Q=20L/s, q=1.60L/(m·s)) can save 40% of the irrigation time while obtaining better irrigation performance, and the water saving effect was significant. Different variable parameters had the same changing law for the irrigation performance evaluation index. The planned water demand depth had a significant impact on the irrigation performance. The irrigation performance was less affected by the slope of the field and the length of the border in the case of a very small single-width flow. It was recommended that the sand border field size used in the irrigation area was 80m×12.5m, and the best single-width flow rate and irrigation time combination can be selected according to the actual different incoming water flow rates. The research results can provide a theoretical basis for the sustainable development of border irrigation in the irrigation area.