The Ga’erqiong copper-gold deposit, a skarn-type and breccia-type copper-gold (iron) deposit related to porphyry, was discovered in recent years in the western Bangong Co-Nujang metallogenic zone, Tibet. Based on the study of the S and Pb isotope characteristics of pyrite and chalcopyrite within the skarn ore, the authors traced the source of ore-forming materials, and indicated regional ore-forming metallogenic regularity based on a comparison with the characteristics of regional mineral resources. It is inferred that the ore-forming materials of the Ga’erqiong deposit was mainly from materials with mantle characteristics and Nyainqentanglha basement gneiss.