A method was improved to identify the extensive and persistent ice-freezing, glaze and rime processes of China during recent decades based on the datasets of daily glaze and rime observations from 740 stations of China from 1 January 1954 to 31 December 2009. And then, frequencies, durations and extent of influence of these processes were analyzed. 60 extensive and persistent ice-freezing processes and 28 (19) extensive and persistent rime (glaze) processes were identified, which mainly occurred in December, January and Feburary. The extensive and persistent rime process mainly occurred in northern part of China, while the glaze process was always observed in the area to the south of the Yangtze River. Extensive and persistent ice-freezing, rime and glaze processes decreased significantly after late 1980s, with few processes being observed during early 1990s to early 21~(st) century. Climate warming may be an important reason for the decreases. As increases of the temperature, the persistency of the ice-freezing weather weakened and the impacting extent narrowed, causing extensive and persistent ice-freezing processes being replaced by regional or local processes with shorter durations.