Abstract: On the eve of Spring Festival in 1984, some stone implements were discovered at Mujiaqiao site near Tianxin village in Lijiang Naxi National Autonomous County, Yunnan Province. The site is about 11 kilometres southeast 28° of Lijiang County (Lat. 26。47'03" N, Long. 100°16'52" E).
The deposits of the site mainly consist of three layers stratigraphieally in descending order as follows: the silt-clay, sand-gravel and clay. The fauna collected in sandgravel includes the following tpyes: Stegodon sp., Elephantoids,Rfti?k>c€ros sp., Cervus nippon, Axis yunnanensis, Bubalug bubalus, Bibos gaurus etc., Judging by the mammals unearthed, the site is suggested to be of Late Pleistocene.
The artifacts discovered are such types as the core, flake (sometimes bearing traces of use), scraper, chopper and stone ball. A great part of the Mujiaqiao paleoliths are covered by a erust of the sand-gravel on their surfaces. This indicates that though they were collected from the surface of the site, they are probably originated in the sandgravel bed.
It is of great interest that the artifacts are rare, and most of them are stone balls. Stone ball often presents in the paleolithic industry of North China, but it first appears in South China now. This probably suggests the more intimate relation of tEe paleolithic culture in North and South China.

Key words: Paleolith; Late Pleistocene; Mujiaqiao site