Lakes are the important components of the Tibet plateau Geomorphic system. Lake level changes and the lake areas are sensitive to climate change.With the development of the dating methods , the plateau lakes are gripping many scientist. Linggo Co lies to west of the Tanggula Mountains (88.52-88.64 E, 33. 79-33.91 N), 95 km away from the Shuanghu town in south and 40 km away from the west of the puruogangri ice field (PIF), the largest glacier group in the Tibetan Plateau (TP) with an area of over 400 km2. It is elonged in S-N with a surface area of 100 km2 and an elevation of 5059 m a.s.l. with palaeoshorelines around the lake. Linggo Co is mainly drained by a glacier-melt water river from the west slope of the ice field as well as lots of small inland seasonal rivers. In this area, the survey on the geology and geomorphology had been done some time ago, but it was lack of the absolute ages on the changes of palaeolevel of the lake, especially the ages of the high levels. Based on the geomorphologic investigation and measurement to Linggo Co in the field, this study propose to find the frequency and scale of the lake level changes. Then, this study will built the absolute ages of the lake level from the Late Pleistocene by the dating the ages of the samples from the lake shorelines, terraces of the river emptied into the lake and desert in the edge of the puruogangri ice field via (OSL) optically stimulated luminescence, cosmogenic radionuclides (CRN) and restore the spatio-temporal variability of the lake, and discuss the palaeoclimate in the area. Not only has this study very important scientific meanings to know the evolution of the Quaternary climate in the area,but also let me understand the palaeoclimate of the lake highlevels in Tibet Plateau.