Abstract In this paper, approximately 11 years of monthly GRACE measurements (from 2003-01 to 2013-12) are used to estimate the real glacier mass variations in Antarctica, after correction of the leakage errors, using global forward modeling. Compared with direct GRACE estimations, our results, after correcting the leakage effect, show the 20.3% of the signals in whole Antarctic glacier mass changes are attenuated in GRACE inversion procedure. 26.4% signals of ice loss in west Antarctica are leaked into the surrounding region, while the leakage errors are up to 70% in east Antarctica. Therefore, the leakage errors should be removed in quantifying the mass loss of Antarctic glacier. The recovered Antarctic glacier mass variations show that most ice losses are in west Antarctica and the Antarctic peninsula, and glacier mass accumulation occurs at Ronne ice shelf and Amery Ronne ice shelf in east Antarctica. The mass loss is about 152.47±2.00 Gt/a in west Antarctica, which is nearly equal to the total mass loss rate of Antarctica. The mass change rate of Antarctic peninsula is about -27.44±0.75 Gt/a, equaling the gaining mass with the rate of 27.27±5.12 Gt/a in east Antarctica, mostly in coastal regions. The total ice mass is being lost at a rate of -152.64±700 Gt/a, with acceleration of -18.85±4.87 Gt/a2,which will cause the sea level to rise atthe rate of 0.41 mm/a.