Abstract: By means of the five day overlapping average, the geographic distributions of the occurrence of the coldest data and daily mean temperature in China are analyzed in the paper. It is found that the distributions are mainly characterized by the zonal pattern. It is also found that the coldest date occurs in the third nine—day period after the winter solstice in most areas of China except Northwest China, the north of Northeast China and the south of Yunnan Province, and the coldest daily mean temperature is lower and lower rapidly from south to north