The home range variation of White-naped Cranes (Grus vipio) has been estimated by GPS tracking data in Poyang Lake in Jiangxi Province from November 2014 to March 2015 and November 2015 to March 2016. Six birds were equipped with GPS-GSM radios (CTT-1060a) at Khurkh and Khuiten in Mongolia (Table 1). To analyze the influence of water level, temperature and other factors on home range, Generalized Linear Mixed Models (GLMM) and Pearson correlation analysis were used. The average wintering duration of the White-naped Cranes in Poyang Lake was 125.00 ± 14.80 d in these two years (Table 2). Average weekly home range was 57.85 ± 94.67 km2 in 2014﹣2015 and 12.01 ± 17.74 km2 in 2015﹣2016 (Table 3). In these two winters, weekly home range size declined significantly as the winter progressed (2014﹣2015: t =﹣2.831, P < 0.01; 2015﹣2016: t =﹣3.422, P < 0.01) (Fig. 1). Water level contributed most to the home range change in GLMM, which shown a significant correlation (Table 4, Table 5 and Fig. 2). Compared with water level, temperature played a less important role in the GLMM (Table 5), and weekly mean home range shown a significantly positive correlation with synchronous average water level (2014﹣2015: t = 3.626, P < 0.01; 2015﹣2016: t = 3.222, P < 0.01) (Fig. 3). The change of water level could potentially influence the growth and availability of Vallisneria spp. and Potentilla limprichtii, which were the main foods of the wintering White-naped Crane and would cause the change of the cranes′ home range.