Abstract: Dalong tungsten and molybdenum polymetallic deposit is located in Mozhugongka County in Tibet， which is distributed in the famous northeastern Gangdese metallogenic belt，and about 8.38 ten thousand ton tungsten trioxide，2.98 ten thousand ton molybdenum，5.03 ten thousand ton copper，lead and zinc resources are obtained in the mining area.Based on the latest prospecting results in the mining area，the regional geological background， geological characteristics of the mining area and deposit geological characteristics are discussed，besides that，the deposit genesis，metallogenic conditions and prospecting indicators are also analyzed in detail.The study results show that:①the mineralization bodies （orebodies） are mainly hosted in the shallow metamorphic rocks of the sandstone and slate in Pangna Formation of Upper Permian Series，Ⅱ#，Ⅲ-1#，Ⅲ-2# and Ⅳ-1# orebody belong to main orebodies，which presents thick veins，lenticular and thin veins ，and are controlled by NE trending Dalong fracture，the wall-rock alterations are well developed with alterative zones，and the mineralization is closely associated with skarnization；②Dalong deposit genesis is a large skarn-hydrothermal vein type tungsten molybdenum polymetallic deposit，metallogenic materials derive from magmatic fluids，and it is closely associated with collision type intermediate-acid magmatic activity，the metallogenic fluids have the evolution trend of that from high temperature，high salinity to low temperature and low salinity.Based on the above analysis results，the metallogenic conditions prospecting potential are analyzed from the aspects of strata，structure and magmatic rock，and the results indicatedthat the favorable prospecting indicators of the mining area are NE trending fault，siliconized and iron cap alteration section，the tectonic intersection area of linear and circular structure，simultaneous silicification and ironation alteration，Cu-Pb-Zn-W-Mo geochemical anomaly，low resistivity and high polarizability geophysical abnormality； the prospecting potential of deep and margin of 15# exploration line，north of Ⅰ#， Ⅱ# ore-bodies and south of IV-1# ore-body are huge， they are worth conducting further prospecting and exploration work in the areas.

Key words: Tungsten and molybdenum polymetallic deposit, Geological characteristics, Deposit genesis, Prospecting indicator, Prospecting potential, North of Gangdese metallogenic belt