To explore the change rule of soil moisture content and reasonable irrigation system of wine grape under the condition of gravel soil, this paper selected Helan mountain gravel soil as typical experimental zone,and took five years cabernet sauvignon as the research object.It designed four different quotas of irrigation treatment such as 2550, 2850, 3225 , 3600 m3/hm2,and applied TDR profiler on soil moisture and soil water potential instrument to monitor the different soil moisture content and water potential change during growth period before and after drip irrigation.According to monitoring data it analyzed from the perspective of different irrigation treatment during the whole and the individual fertility,and studied the change rule of soil moisture content of wine grape in gravel soil under different irrigation quota.It finally put forward the suitable irrigation system in growth period. The results show that with the increase of irrigation quota, the soil moisture content changes obviously within the scope of 0 to 40 cm soil layer; The change rule of water potential in soil layer of different depths related to volume of irrigation quota; the water accumulation of 1 m deep soil than does not increase with the increase of irrigation water, but when the amount of irrigation reaches a certain norm, the water accumulation of soil decrease with the increase of irrigation water.The water accumulation of soil is low and easy to produce deep seepage when the single amount of irrigation in gravel soil is higher than 300 m3/hm2.