The Dahongliutan- Bailongshan area has the most concentrated distribution of granitic pegmatite and the best mineralization of rare metals in the West Kunlun and Karakoram Mountains. In 2017, through multiple field surveys, systematic sampling and laboratory analysis, the project team confirmed that a super- large lithium rubidium polymetallic deposit was newly discovered in Bailongshan, Karakoram hinterland of Hotan County, Xinjiang Province, which is a granitic pegmatite- type deposit. At the same time, several granitic pegmatite type lithium polymetallic deposits, such as Xuefengling, Xuepen, Shuangya, Bingzhou, Bailongshannan and Dahongliutan East (496), have been discovered in Dahongliutan- Bailongshan. For the Bailongshan lithium polymetallic deposit, it has been determined that the ore- bearing pegmatite vein group belt has a length of >8250 m and a width of 46~165 m, and can be divided into 5 ore- bearing pegmatite vein group belts. A total of 166 ore- bearing pegmatite veins have been found, of which 52 have been studied. The length of ore- bearing pegmatite veins is 50~1230 m, the width is 1. 5~157 m, the average grade of Li2O is 0. 93%~3. 44%, BeO is 0. 54%~0. 63%, Rb2O is 0. 11%~0. 18%, Nb2O5 is 0. 011%~0. 018%, Ta2O5 is 0. 003%~0. 009%. The Xinjiang Kunlun Blue Diamond Mining Development Co. 〖KG-*2〗, Ltd. has explored some sections in the first phase of exploration. At present, the controlled resource amount of Li2O in the first phase of exploration exceeds 600000 tons, reaching a super- large scale. The project team predicts that the potential resources are 5. 06 million tons of Li2O, 160000 tons of associated BeO, 310000 tons of Rb2O, 40000 tons of Nb2O5 and 17500 tons of Ta2O5, which is expected to become a giant lithium deposit on world scale. The pegmatite dike group of the Bailongshan Lithium deposit has the phenomenon of symmetrical zonation of pegmatite dike group with the center of two- mica granite in the north and south. The deposit was formed in the collision orogenic environment, which is different from the typical LCT and NYF type Lithium deposit, and has its unique characteristics. A new viewpoint that the Bailongshan lithium deposit is the LRN (Li- Rb- Nb) type lithium deposit is proposed.