In this study, it is meaningful to make a thorough inquiry to explore the fact that the agricultural climate production potential will be involved in climate change in Guangxi.The PRECIS (Providing Regional Climate for Impact study) regional climate modeling system was used to generate the winter climate scenario (SRES /A2) dataset over Guangxi.The simulated temperature and precipitation were corrected with different model methods.Then the Miami model and Thornthwait Montreal model were used to produce the estimation of Guangxi winter temperature, water and evapotranspiration climate production potential, being estimated the temporal and spatial distribution and variation characteristics of Guangxi winter climate production potential in the future.The climate production potential of temperature with an increasing trend over time, and the North South high-low latitude to the space distribution characteristics in the future in winter in Guangxi.The climate productive potential of precipitation and evapotranspiration estimation would decrease time by time, showing from east to west to the spatial distribution characteristics.The winter heat resources was well for farming in the future in Guangxi, but it was restricted by the limitation of precipitation, making the rapidly decrease of the evapotranspiration climate production potential.It showed that winter rainfall was the decisive driving force for winter climate production potential.