A large number of bronze wares have been unearthed from the Sanxingdui site in Guanghan, Sichuan Province. Currently, there is no consensus on the source of copper used in the Sanxingdui bronze wares. Through actual investigations of abandoned mines in the Dabaoshan Copper Deposit, samples of ores and smelting slags were collected from different mining sites for lead isotope determination and the measurement of Cu, Pb, Zn, and other major metallic elements, as well as copper- philic elements such as Au, Ag, Se, As, Sb, and iron- philic elements like Ni, Co. By utilizing the lead isotope ratio method and trace element tracing method, and comparing with previous research results on the chemical composition of Sanxingdui bronze wares, this study comprehensively analyzes the correlation between the copper sources of Dabaoshan Copper Deposit and Sanxingdui bronze wares. The results reveal the following:(1) The copper ores from Dabaoshan are ordinary lead, and using the lead isotope ratio method to trace the copper source of Sanxingdui bronze wares containing special lead cannot accurately determine their copper ore origins.(2) The trace element content characteristics indicate that the trace element combination features of most of the Sanxingdui bronze wares are similar to those of the Dabaoshan Copper Deposit.(3) Further factor analysis and cluster analysis of trace elements show that the trace element combination characteristics of some Sanxingdui bronze wares are similar to those of most samples from the Dabaoshan Copper Deposit, suggesting that the copper material for these bronze wares likely originated from the Dabaoshan Copper Deposit.