It is discovered there are many moraines on Mengshan Mountain, which is important for the Quaternary glacial study in Eastern China. In this paper, we sampled and dated the ages of different moraines with the Optically Stimulated Luminescence (OSL) dating method. We obtained the glacial ages of 8.2 ka BP and 18.2~22.2 ka BP for the first time in the middle and low mountainous areas of eastern China. According to the results, two credible glacial periods called Lanma and Mengshan are determined. Quaternary glaciations theory in Eastern China established by Lee J S is affirmed and developed.