Field experiment was conducted to investigate root distribution of winter wheat and the spatial avai-lability of soil water and nutrients under different irrigation strategies: High frequency with low amounts (HL) and low frequency with high amounts (LH). The results showed: HL decreased root growth in topsoil after regreening, but reduced root decline after shooting, while LH increased root growth in topsoil but root decline was higher after shooting. Furthermore, in subsoil layer (30~60 cm) root biomass and root length density of LH were higher than those of HL. Change of soil moisture was solely resulted from irrigation. Also irrigat ion caused nitrate-N to move down, in the three treatments, not out of 0~60 cm root zone. However irrigation had no effects on available P and K distribution in soil profile during wheat growth. The difference of root distribut ion in soil did not affect water uptake. Due to insufficient water stored in soil before sowing, available water of soil (0~90 cm) was depleted after harvest. Furthermore different root length density in upper and middle layer did not affect nutrient uptake in those layers. It was dry in the topsoil after flowering that affected nutrient uptake. Due to irrigation after flowering HL increased not only grain milking but also nutrient accumulation of grain. Winter wheat growth, development and nutrient uptake among three treatments had no difference before flowering. After flowering insufficient water supply of LH and LW affected grain milking, which cause decrease in kernel weight and yield.