A field experiment was conducted to study on the effects of irrigation norm and water salinity on water use efficiency for spring maize under saline water irrigation in Shiyang River basin of Gansu province. The research results showed that the water consumption of spring maize gradually increased with irrigation norm increased. With the increased of irrigation water salinity, the water consumption of spring maize decreased. The deficit irrigation could improve soil water storage and saline water irrigation could decrease soil water storage from soil water-holding capacity considering. The deficit irrigation could improve water use efficiency and irrigation water use efficiency and saline water irrigation could decrease water use efficiency and irrigation water use efficiency of spring maize. The maximum water use efficiency and irrigation water use efficiency of spring maize was deficit irrigation with fresh water treatment and the maximum value was 2.90 kg/m3 and 4.23 kg/m3, respectively. When irrigation norm was 340 mm and irrigation water salinity was 0.71 g/L, water use efficiency and irrigation water use efficiency of spring maize increased above 25%, and also 170 mm of water has been saved compared with sufficient irrigation and fresh water treatment in study district.