With the daily radiation data and monthly data of mean temperature, precipitation, relative humid, sunshine fraction and wind velocity amended Penman's method was used to calculate the potential evapotration spiration and the aridity index, at present and three prescribed climate scenarios, with temperature rise by 1.5℃, 3.0℃ and 4.5℃, and precipitation increase by 10%.The sensitivity of China water condition to global climate change was assessed.The simulated results indicate that under the three p...