A standardization is conducted on the annual minimum air temperature data from all the counties of Fujian Province in the 50 years from 1950/1951 to 1999/2000, and an analysis are made of the characteristics of the colder-than-normal years. The results show that in the 50 years, the lowest year of annual air temperature is 1954/1955, and the third lowest year is in 1999/2000; the abnormal air temperature may occur while monthly mean temperature is normal in winter; some stations are still normal when the whole province is identified as in a colder-than-normal year, with the difference up to four grades; if the annual minimum air temperature assessment of the whole province shows abnormalhy cold or the colder-than-normal, there will probably occur cold damage or chilling injury of orchards, flowers, and crops.