Abstract: Based on the data of daily maximum temperature and daily minimum temperature of 26 stations in Qinghai province from 1960 to 2009,the spatial and temporal variability of extreme temperature events was analyzed by using of regression analysis,inverse distance weighted,Mann-Kendall and wavelet analysis methods.The results showed that the occurrence of cold days and nights decreased significantly with -0.80 and -0.32d〖DK〗·y-1(P<0.01) respectively,and the occurrence of warm days and nights increased significantly with 0.66 and 0.47d〖DK〗·y-1(P<0.01) respectively.Both cold days (nights) and warm days (nights) existed abrupt change (P<0.01).There was displayed very clearly in cold days (nights) and warm days (nights) in different periodsWith climate warming in future,winter could become warmer and growth season could extend.It was necessary to take measures in agricultural production

Key words: Qinghai province, Extreme temperature, Spatial distribution, Inter decadal variation