Abstract: In order to reduce the field irrigation time, design reasonable border field specifications, and improve irrigation efficiency, this study adopted the method of combining the field border double-sided irrigation experiment and WinSRFR5.1 model analysis to simulate the flow process and irrigation quality of double-sided surface irrigation. Taking the water flow confluence as the boundary, the field border double-sided irrigation test was divided into two irrigation tests with different slopes, and combined with the WinSRFR5.1 model to calibrate the soil infiltration parameters（infiltration coefficient K and infiltration index a）and simulate the irrigation quality contour map, and then compared and analyzed the simulation results. The results showed that field border double-sided irrigation was feasible. Compared with border width, border length changes had a greater impact on irrigation efficiency and irrigation uniformity. Combining with the status quo of border fields in Wuqing district, Tianjin city, the border length and width range of bilateral irrigation border fields were obtained: single width flow rate is 2.96 L/（s·m）, border width is 2.0-11.5 m, border length is 49-165 m, and irrigation efficiency and irrigation uniformity are both above 90%.

Key words: irrigation on both sides, border irrigation, irrigation quality, WinSRFR