Characteristics of winter temperature variations are analyzed with average temperature date from 1954 to 2002 in Guangdong Province.By using principal component of factor fields, the characteristics of spatial-temporal distributions of winter temperatures in Guangdong are mainly classified into four categories. For the last 49 years ,it is about 90% cases belong to the categories of cold or warm in the whole province. Linear trend of winter temperatures in Guangdong is warm up with 0.25℃ per 10 years, which is weaker than other parts of China.