Abstract: Paleoclimatic proxies may be divided into 3 groups according to the types of the carriers of climatic information and the exclusiveness, application scope, measurability and effectiveness of the proxies themselves. We suggest that the carriers of climatic information should be selected from climate-sensitive areas, such as Polar Regions, Tibetan Plateau, warm pool, monsoon regions for paleoclimate reconstruction. From a perspective of single climatic factor, an index system for a climate carrier can be constructed based on proxy division. Then time sequence of environmental records might be obtained by comparing the typical proxy of different carriers in glacial-interglacial cycles. Furthermore, the time resolution of carriers in response to environmental change and global climate change is also discussed in this paper.