The effects of different cultivation and different fertilizer levels on yield and water and nitrogen fertilization utilization for peas/maize intercropping system were conducted in Hexi irrigated area in Gansu province.The result showed that different fertilization and cultivation combination models significantly affected the system productivity of intercropping.The high yield model（T3） increased yield by 52% than the farmer model（T1）；The high yield and high efficiency model（T4） with reducing fertilizer and fertilizer application by stages and mulching also increased yield by 31%，nitrogen partial factor production increased by 31%，and water use efficiency also increased by 20%.The yield of ridge irrigation model（T5） increased by 23% compared with the farmer model（T1），and the water use efficiency increased by 15%.Considering the high yield and high efficiency，the high yield and high efficiency model（T4） and ridge irrigation model（T5） could be considered as the high yield and high efficiency model of pea/maize intercropping to apply in agricultural production in this area.