Abstract: Groundwater drought is a distinctive type of hydrological drought, which could severely affect the areas dependent chronically on groundwater resources.This study estimatedthe groundwater storage anomalies in North China Plain by combining the terrestrial water storage anomalies retrieved from GRACE(Gravity Recovery and Climate Experiment)and the GLDAS(Global Land Data Assignment System)data.Besides, the spatial-temporal characteristics and trends of groundwater drought in this region from April 2002 to June 2017 were investigated based on the groundwater drought index DSI(drought severity index)and singular spectrum analysis(SSA).The results showed thatat temporal scale, the DSI decreased at a rate of 0.02/month from April 2002 to June 2017.In June 2013,the groundwater drought occurred in North China Plain.From March 2016 to June 2017,the groundwater drought became more severe in North China Plain.Spatially, the groundwater drought in the central and northern regions was more severe than that in the south part of North China Plain.After June 2013,the mean values of DSI in the central and northern regions were lower than the threshold of moderate drought(-0.80).In the northern region, DSI was below the threshold of severe drought(-1.60)in June 2016.