Abstract: The 53 stations in Central China, including Henan, Hubei and Hunan, were selected through the homogenization test. Based on the daily average temperature data from 1961 to 2007, the heating degree days (HDD) and cooling degree days (CDD) per year were calculated to analyze their trends, decadal variations and spatial differences. The results show that the regional annual HDD was reduced significantly in the past 47 years, and the annual CDD showed a slight declining, which was related with a smaller warming rate in the warm season. Spatially, the HDD appeared a decreasing trend from Henan to Hunan, while the CDD showed an opposite character. The HDD changed in an opposite phase with the average temperature in the cold season, while the CDD changed in the same phase with the average temperature in the warm season.