Abstract: In general, basal moraine hills, typical landform of ablation drift occur only in continental glaciated area. However, large stretches of them are found well preserved in the bed of glaciated U-shaped valleys of Boduizangbu basin in Southeastern Tibet, scattering on the inner side of the terminal moraines remained from the last glaciation of Late Pleistocene. From lower stream upward basal moraine hills increase both in number and in size, and connect one with another in the uppermost part. They consist of boulders, pebbles and coarse sand etc. all mixed up, and some-boulders and pebbles are quite rounded, showing that such basal moraines are ablation moraines of maritime glaciers in rapid retreat from gentle and broad valleys under action of fluvioglaciation. Basal moraine hills in this area are important in the study of both glaciology and exploration of sand ores.