Abstract: A group of caves, having developed in the strata of Cambrian dolomite limestone and being present in about six different altitudes, were found in the northern part of Qinling Mountains. They are situated at the hill slope behind Zhangping Village being on the left bank of South Luohe River, Luonan County, Shaanxi Province. All the caves were excavated in the past by the local farmers, but there are still more or less undisturbed sediments preserved. A serious of undisturbed fluvial sediment samples in the caves have been collected for dating by the method of selected frequency optical luminescene (SFOL). The results of the dating of the cave group, from the highest, the sixth level, downwards to the lowest, the first level, are: No.6, 0.493±0.055MaB.P.; No.4, 0.259±0.023MaB.P.; No.3, 0.205±0.019MaB.P.;?No.2,?0.031± 0.0 035MaB.P . and the No. 1, 0.028±0.0 032MaB.P. A lot of mammalian fossils (10 gen. and sp. of macro mammals and 28 gen. 23 sp. of micro ones) were collected from the same deposits of these caves. The fossils from the highest cave are Blarinella quadroticauda、Microtus oeconomus、Niviventer confucianus、Rhizomys troglodytes、Hystrix and some genera of lizard of reptile. Most of these fossils appeared also in the deposits of localities such as Loc.1 of Zhou koudian near Beijing, Loc. of Hexian Ape Man in Anhui and Xishuidong of Lantian, Shaanxi. The ages of these localities are almost all in the Middle Pleistocene. In other words, the earlier deposits of the 6th level cave of Zhangping were deposited in the Middle Pleistocene, same as that of Loc.1 of Zhoukoudian, Hexian and Xishuidong. For comparing the age of these six level cave deposits with that of the terraces of Luohe River, the authors investigated the characteristics of Luohe River terraces near the caves of Zhangping area, measured their height and collected samples of the terrace deposits for dating. The age of terrace Ⅲ which is almost at the same altitude of cave 6 or at the height range from 5th to 6th cave, is 0.526±0.051MaB.P. The terrace Ⅱ, same as cave 3 in altitude or at the height range from 3rd to 4th cave, is 0 241±0 025MaB.P. The data of the altitude and the age of both the caves and terraces can be well correlated (Tab.1) . From these, we have obtained an uplifting curve of Qinling Mountains since the Middle Pleistocene (Fig.3). From Fig.3, we may understand that the uplifting rate of Qinling Mountains since the Middle Pleistocene(about 0.5MaB.P.) has fluctuated. And the later the period, the bigger was the uplifting rate, especially since the later part of the Middle Pleistocene. It is almost consistent with the uplifting of the Qinghai Xizang Plateau. It shows that the uplifting of the Qinling Mountains is closely related with that of the Qinghai Xizang Plateau. Only the uplifting height and rate is lower and slower than that of the Qinghai Xizang Plateau, because the Qinghai Xizang Plateau is the main or center area of the uplifting.