The Shaling sand hill, about 2 km in width and 5 km in length, is located in Liaohua Town of Xingzi County. On its north and west margins, three sections (SS1, SS2 and SS3) were investigated. Vermiculated mottles in this hill can be divided into three types. In OSL dating of sand samples, no evidence indicates that the samples show OSL saturation signals and the annual dose of the samples was affected by weathering. So the OSL ages can be interpreted as the deposition ages. The sand layers of Section SS1 and SS2 were deposited about 80 ka and 71 ka ago respectively and the sand layer of Section SS3 has been accumulated since 29 ka.