Abstract: Nature reserve has been served as one of the most important pathways for biodiversity conservation and climate change addressing.In the paper we have collected daily meteorological observation data from 3 meteorological stations around the Dalinor Reserve during 1957—2013,and analyzed the changes of annual mean temperature,annual precipitation,aridity index in the past 57 years,using linear regression model and Mann-Kendall non-parametric statistical testing.The results show that the annual mean temperature has significantly increased,while the annual precipitation exhibits a decreasing trend during 1957—2013.The highest temperature and lowest precipitation occur red in the beginning of the 21st,and change significantly from the decadal changes.The annual mean temperature shows an upward trend,while annual precipitation exhibits a downward trend in summer.Winter precipitation decreases slightly,and spring and autumn precipitation increases slowly.From 1957 to 2013,the seasonal changes in the aridity index show a slowly increasing trend in the Dalinor Reserve,and the values are between 0.80 and 2.56.