In order to optimize the drip irrigation technical parameters of winter wheat under drip irrigation in northern Henan province,the effects of different dripper discharges (2.0,4.0,6.0 L/h) and the spacing of drip irrigation lateral springs (40,60,80,100,120 cm) on soil distribution of irrigation water,winter wheat yield and water use efficiency were studied in a field experiment.The result showed that:In terms of the drip irrigation uniformity,reducing the distance between drip irrigation lateral spacing and increasing the dripper discharge could improve the distribution uniformity of irrigation water in the root zone of winter wheat.Under the experimental conditions in this study,the yield and composition of winter wheat were affected by the spread of drip irrigation lateral spacing over 80 cm,and the yield of winter wheat increased with the increase of the dripper discharge with the same drip irrigation lateral spacing.In terms of water use efficiency,the appropriate combination of drip irrigation lateral spacing and dripper discharge could effectively reduce water consumption and improve water use efficiency under the same irrigation condition.The present results suggested that the parameter combination of drip irrigation lateral spacing of 60 cm and dripper discharge 2.0 L/h had the highest yield (10 626.45 kg/hm²) and the highest water use efficiency (2.42 kg/m³).Through the comprehensive analysis of irrigation water uniformity,winter wheat yield and water use efficiency,the parameter combination of 60 cm drip irrigation lateral spacing,dripper discharge 2.0 L/h,80 cm drip irrigation lateral spacing,and dripper discharge 6.0 L/h were the optimal technical parameters for winter wheat drip irrigation.