Glacier events are a direct geological indicator for climatic changes. In the recent years, with the development of Optically Stimulated Luminescence (OSL) dating method, it has been widely used in dating of glacial sediments. This paper employed the OSL method to date the moraine sequences on the southern margin of the ancient ice-cap of Daocheng, Sichuan Province so as to establish time sequence of glacial events occurring in the Kuzhaori area. However, the OSL ages were not in accordance with previously reported ESR ages  (Electron Spin Resonance) and ¹⁰Be exposure ages. The comparative study suggests that partial bleaching prior to burial and poor purity of the quartz may result in inaccuracy of the dating results.