Abstract: Through analysis of tree ring data, the variations of cold and warm climate in the last 300 years,and of dry and wet in the last 180 years in the region of Mts. Altay were found out. Totally four colder and four warmer periods as well as dry and wet stages were identified and their influences on variations of glaciers in the last 180 years in the same region were analysed. We found that glaciers advanced greatly in 1853-1888, and retreated in other years. However, in the 70’s of this century, the climatic condition is favorable for glacial advance.