Abstract: Based on the grain-size analysis of the paleosol section at Fenghuang Mountain in Chaoyang, Liaoning Province, the percentages of the coarse grains, fine grains and supper-fine grains were used as indicators of winter monsoon, westerly wind and summer monsoon strengths, respectively. The results show that the winter monsoon, westerly wind and summer monsoon change synchronously. The westerly wind and summer monsoon have the same variation trend, and there are 4 enhanced stages and 4 decreased stages plotted. The winter monsoon has the opposite variation trend. The climate was warm and wet at the following stages: 71-148 ka BP, 176-208 ka BP, 225-243 ka BP, and 311-403 ka BP；and the climate was cold and dry at the following stages: 148-176 ka BP, 208-225 ka BP, 243-311 ka BP and 403-423 ka BP.