Abstract: The Shirengou site (42°11'20''N，128°48'45''E)，located on the second terrace of the left bank of the Hongqi river is in Helong County, Yanbian City, Jilin Province. It was discovered in 2004 and excavated in 2005. Some 1291 stone artifacts were found in situ on the surface of the site. The sediments are divided into six layers, with the stone artifacts found mainly from 2—4 layers. These artifacts included retouched tools, cores ( flake and microblade core ), flakes, blades, microblades, chips and chunks. Obsidian was the major raw material. Retouched tools included used flakes, scrapers, burins, a backed knife, a borer; with scrapers being the dominative tool type. The stone assemblage at the Shirengou site shows the distinctive character of the microlithic industrial tradition of the Upper Paleolithic in North China. According to the characteristics of these artifacts, and the stratum from which the artifacts were located, we suggest that the site is probably attributed into the late period of the Late Pleistocene or the Late Paleolithic.

Key words: Shirengou; Obsidian; Upper paleolithic; Stone artifacts