Changes of soil moisture over China along with global warming are explored through comparing the control and double CO₂ experiments in 10 coupled models participating in the 4th Assessment Report(AR4) of Intergovernmental Panel on Climate Change(IPCC).The results show that the summer monsoon enhances and the winter monsoon weakens over East Asia under the global warming.More water vapor is transported to China during both winter and summer.Precipitation increases in almost all area of China except for the Yangtze River in summer and South China in winter.The difference between precipitation and evaporation(P-E) during summer displays an increase over Northeast and southern China,and a decrease extending from the Yangtze River to Northwest China.During winter,almost all models simulate an increasing(a decreasing) P-E over northern (southern) China.Under the global warming,changes in precipitation,evaporation,runoff and snow melting over China collectively cause an increase in soil moisture over arid region,and the increase is stronger in winter than that in summer.However,the soil moisture decreases over other regions.These results are based on multi-model ensemble mean,which is of value to some degree for future climate prediction;whereas these models exhibit variety and uncertainty.