Climatic characters and changes of ice-freezing days in China are analyzed based on the daily rime and glaze observational dataset at 743 stations in China from 1954 to 2009. It is found that ice-freezing occurs mainly in Xinjiang, eastern Northwest China, eastern Inner Mongolia, Northeast China, North China, the Huaihe River valley and the region to the south of the Yangtze River, with the rime being almost in the southern part of China while the glaze in the northern part. Annual ice-freezing day generally ranges from 1 to 5 days and heavy ice-freezing regions scatter in northern Xinjiang, southern Shannxi, central Northeast China, eastern North China, Qinling mountain range, northeastern Yunnan, Guizhou, and so on. During 1954 to 2009, the ice-freezing days show a significant decreasing trend and an abrupt change point is observed in the early 1990s, with the decreasing amplitude of rime days greater than that of glaze days. This decrease in ice-freezing days has close relevance with the obvious increase in the temperature and decrease in the relative humidity and the wind speed. Additionally, the ice-freezing days are closely related to the extent and intensity of Asian polar vortex, the intensity of the Ural blocking high and the Baykal blocking high, as well as the extent, intensity and location of the western Pacific subtropical high. Further, during 1954－2009, the extent and the intensity of Asian polar vortex decreased, and the Ural and Baykal blocking highs intensified, the extent and the intensity of the western Pacific subtropical high decreased while the subtropical high shifted more westward. These changes in general circulation may cause the significant decrease in ice-freezing (glaze, rime) days in China.