An experiment was carried out to study changes in soil moisture in winter wheat field under the conditions of drip irrigation,furrow and ridge planting.Results show that drip irrigation had obvious effect on soil moisture content in the soil layer between 0 and 60 cm in depth.Because of soil evaporation and water absorption by plant roots,soil moisture content in the 0~30 cm soil layer changed the most drastically during the growing season,less in the 30~60 cm soil layer,and the least in the 90~120 cm soil layer.After irrigation,soil moisture in the 0~120 cm soil layer was distributed in a Z pattern.Drip irrigation showed greater effect on furrow planting than on ridge planting.Analysis of soil moisture content in every soil layer,demonstrated that the plant at the milking stage was the most water-consuming stage,and the tasselling stage came the next.Treatments without irrigation consumed the water in deeper soil layers.Soil moisture content in the ridge plant ing treatment was higher than in the furrow plant ing treatment.Compared with the flatten culture treatments,the furrow treatments increased the most in soil moisture content after irrigation,the ridge planting treatments came the next.One week after irrigation,soil moisture content dropped the most sharply in the flatten culture treatments,the next in the ridge planting treatments,and the least in the furrow planting treatments.As for soil water movement after irrigation,it was faster in the ridge planting and furrow planting treatments than in the flatten culture treatments.