According to 40 Ar-39 Ar dating, a copper-bearing porphyry complex in Shaxi, Anhui province is determined to be a product of magmatic evolution during early Cretaceous. Sm and Nd isotopic data and petrochemical analysis show considerable differences between the Shaxi porphyry and the intrusions in its adjacent areas, suggesting that the formation of the Shaxi porphyry be controlled by the Tancheng-Lujiang Fault Zone. Therefore, it is proposed that copper (gold)-bearing porphyry in this area should be looked for along the Tancheng-Lujiang Fault Zone.