Abstract:In Our field survey in the Daojie Basin segment through which the Nujiang River passes, lower terraces below 150m above river level were re-identified and re-divided into nineeight levels(T1~T8). At the same time, there are four levels of higher terrace 180~380m above river level (T10~T13)and a suit of dammed-lake sediments burial to be newly discovered. Lower terraces were dated by OSL, U-series and ESR methods,whereas the dammed-lake sediments were paleomagnetically analyzed. The results show that six lower terraces are formed since the Middle Pleistocene and that the upper part of the dammed-lake sediments is dominated by normal polarity but contains two short times of negative polarity, whereas the lower part is negative polarity. According to correlation with the standard magnetic polarity time scale, the formation age of the dammed-lake sediments should be 4.2~2.6Ma, i.e. the Middle-Late Pliocene. Thus, the higher terraces and burial terrace below the dammed-lake sediments should form in the early of Pliocene to the late of Miocene. On the basis of the results in the paper and our preliminary regional stratigraphic correlation, it can be believed that accompanied with intermittent uplift of the Tibetan Plateau since the middle and late of Miocene, the Nujiang River occurred and cut down and by the early of Pliocene cut down into below today’s river beds.