The paper aims to find out the process of climate change in Datong Basin, find out its change rule, predict the trends of climate change in the future, and direct local agricultural production better. To observe the formation of the sedimentary section and dating of samples, use the grain size and magnetic susceptibility analysis, and restore the climate change since the late Pleistocene in Datong Basin. It shows a warm and wet—cold and dry —warm and dry climate cycles: the Late Pleistocene of the Xujiayao Group is warm-wet climate; Late Pleistocene of the Malan Group is dry-cold climate; Holocene is warm-dry, which shows a gradual dry and warm climate trend. Some scholars has predicted that the future climate according to recent changes on precipitation and temperature, which confirmed the conclusion is reasonable. In short, the overall climate was dry trend since the late Pleistocene in Datong Basin, which will provide reliable scientific basis for the development of this district droughty agricultural development policy.
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