Bangong Lake-Nujiang River metallogenic belt is an important copper-polymetal ore belt in Tibet，between the Lhasa block and Qiangtang block, extends about 2000km from east to west. Under deeper investigation, bismuthic mineralization distributed in belts in the metallogenic belt had been found recently（Zhao-yuanyi，2010）. Garqiong is the key skarn-type copper-gold ore deposits in the metallogenic belt. With the method of sampling by field geological investigation, observation and component analysis using microscope and SEM (scanning electron microscope)，the author have first found the independent mineral of bismuth-bismuthinite in the ore，and it is also the first time that industrial mineral of bismuthinite was found in the Bangong Lake-Nujiang River metallogenic belt. The research results has enriched the variety of bismuth minerals and has great importance in deposit research and in determining the direction of future prospecting. Based on identification under microscope and fluid inclusion temperature, Symbiosis Relation between Cu-Au-Bi was determined. Bismuth was migrated in the form of S-complexes in the ore-forming hydrothermal solution. Bismuthinite was formed in high-temperature hydrothermal.The ore-bearing rock body LA-ICP-MS zircon U-Pb dating is 83.2~87.1 Ma, and the Re-Os model ages of deposits are between 86.87~87.29Ma in the Garqiong copper-gold ore deposits. The mine bed type is skarn-type copper-gold ore deposits of magmatic hydrothermal contact metasomatic origin.