With the Tuojiawan sediment profile as study objectives, we analyzed their macroscopic structure, sedimentological characteristics and physicochemical properties, and obtained their formation time using OSL dating. Based on the field observation and indoor laboratory data, this study also established the stratigraphic sequence of the loesspalaeosol in the Upper Reaches of Hanjiang River valley. OSL datingbased stratigraphic chronology study reconstructed the change history of the Upper Reaches of Hangjiang River since the last 55 ka BP. The results suggest that four sequences developed in this area. Terrace I of Hangjiang River formed around 55 ka BP, immediately followed by continuous eolian sediments. The stratigraphic palaeosolloess sequence of the Tuojiawan profile from the bottom to the top includes: loess L1L3 (550~285 ka BP)→ palaeosol L1S2 (285~245 ka BP)→ L1L2 (245~230 ka BP)→ palaeosol L1S1(230~210 ka BP)→ L1L1 (210~115 ka BP)→transitional loess Lt (115~85 ka BP)→palaeosol S0(85~30 ka BP)→recent loess L0(30~0 ka BP). The Malan loess records four warmwet periods occurring at 410~445 ka BP, 340~375 ka BP, 245~285 ka BP and 210~245 ka BP. Among them, the last two periods gave rise to the formation of palaeosol L1S2 (370~296 cm) and paleosol L1S1 (276~230 cm). During the megathermal period (85~30 ka BP), the upper Hangjiang river was not always the most warmmoist climate since the last glaciation, but intermittently, and relatively transient, relatively cool and wet climate occurred at 5~6 ka BP.