Abstract: The south cave of Ma'anshan site is situated at the foot of the hill of Ma'anshan on thesouth of Tongzi town, Guizhou Province. Ir was discovered in 1989. In the next winter, au-thors investigated the site, and excavated a trench (1X5m^2) in the cave. From the :trench, about 63 stone artifacts and a large number of animal bones were found, while we: collected theremains, which include about 139 stone artifacts and lots of aninnal bones and4 fossil humanteeth, that scattered in the accunulation near entrance of the cave. The remains collected, infact, are originally from the cave deposits. The mammalian fossil species inclule Ursus, Ailuropoda melanoleuca, Rhinoceros sinensis, Megatapirus augustus, Cervus and so forth. Thesione artifacts could be sorted as cores, flakes, scrapers, end -scrapers, points, burin and etc. Itsage would belong to late pleistocene supported by paleontological and cultural rem:ains. Thecharacteristics of the artifacts is s'imilar to those from Maanshan site in north side of the hillof Maanshan. Human fossil teeth, which include left I^1, right M^3, right M^1 and right dM^1,are similar to those of late Homo sapiens in mor phology.

Key words: Tongzi; South cave of Ma'anshan; Stone artifacts; Human fossil teeth