Abstract: In the paper microlithic technology is defined on the basis of studying microlithic materials from the Hutouliang site. By means of statistical analysis and model, the author considers that there are two microlithic technologies existed in the Hutouliang site: wedge-shaped core Ⅰ and . In comparison, the microblade detaching efficiency of Type Ⅰcores are higher than the Type Ⅱcores.Type Ⅰcores have been recognized as a multi-functional artifacts that could have been used as tools such as scraper, point, drill, as well as microcore to produce microblades. Moreover, they could also have been carried along by prehistoric hunter2gatherers as part of provisioned toolkits, whereas Type Ⅱ cores only have been used as cores to detach microblades in living areas.

Key words: Mitochondrial DNA; Heteroplasmy; Replication