Using August 2002 to December 2016GRACE data,TWS variations are derived after deducting the leakage affect,and temporal spatial variation and change trend are analyzed.Results show that the growth of TWS is 0.130.12 cm/a.Areas where TWS significantly changed have more leakage influence.For example,after correction,in the Three Gorges Reservoir TWS increased from about 10 to 15-20 mm/a,presenting agreater spatial heterogeneity.In addition,the Yangtze River basin water cycle changes are closely studied using a variety of meteorological data thorough angles of weather impact and human activity.Precipitation and TWS have high correlation,TWS delaying 1 to 2 months.Whereas in the upstream source,temperature is the dominant factor,increasing trends of which have been accelerating melting glaciers,leading to an increasing trend of TWS.The Three Gorges project increased TWS.ENSO phenomena are another significant factor influencing TWS in the Yangtze River basin.