This paper presents lead isotopic analysis results for bronze objects from several Lower Xiajiadian culture sites and one Gaotaishan culture site. It is revealed that, except for two objects, lead isotope data of the bronzes from four Lower Xiajiadian cultural sites are quite close to each other. It is suggested that the resources of bronze objects from the four Lower Xiajiadian culture sites were most likely to be from the Dajing polymetallic deposit. It is also inferred that the bronze object with a high lead content from Dashanqian Site might be related to the Liaoning Huanren Polymetallic deposit in terms of its lead resource. The source of the raw material for an unalloyed copper object from Erdaojingzi Site is different from that of Dajing, a finding that needs further investigation in the future. The test results from Wanliu Site show that it has the characteristics of high radiogenic lead, which indicates that it had some relationship with other archaeological cultures of the same period.