Abstract:Qin cultural sites mainly locate in the eastern Gansu and Guanzhong regions, and the Qin State bronzes found in these areas are of great value for the study on artifact styles, manufacturing techniques and raw material sources. The published lead isotope data of Qin State bronzes from Lixian county, Longxian county, Fengxiang county, Chencang district and the Mausoleum of the First Qin Emperor were collected and analyzed. The results show that during the Spring and Autumn seriod, the raw materials of Qin State bronzes have similar mineral characteristics, and mainly derive from the area around Tonglu Mountain in Daye, the southern Anhui and Xiaoqinling Mountain. The minerals used by Qin people in the early, middle, and late Spring and Autumn period show an obvious diachronic changes, and this change tends to be synchronized with that of the Central Plains and the Han-Huai region. In the late Warring States period, the ore source of bronzes from the Mausoleum of the First Qin Emperor is different from that of bronzes from other Qin sites, and the provenance of the raw mineral has a close relationship with the Xiaoqinling Mountain. The conclusion reveals the exchange and interaction in bronze resources between Qin State and Chu State, Zeng State during the Eastern Zhou period.