Abstract: Using daily meteorological factors of the meteorological observatory from 1971 to 2007 during the period of “Shu Jiu” (the nine periods following the winter solstice) in Beijing ,on the basis of the statistical method, the climate features and the change during the period are analyzed. The results reveal that the cold stage in Beijing happens from the third period to the fifth period. From the end of the third period to the start of the fourth period, the average temperature is 3.8 degrees below zero which is the minimum value and lasts for 4 days. The extreme lowest temperature is 18.3 degrees below zero which appears in the first day of the fifth period. The lowest average temperature is 3.5 degrees below zero and appears in the third period. The coldest period is the third period. Moreover, the average temperature for the 81 days in the period of “Shu Jiu” turns warmer quickly from the 1970s to the 1990s, with an amplitude of 1.25 degrees.The average temperature of each period shows a trend of warming, the fifth period has the biggest variation range which is 1.38 degrees each decade.