Abstract: In the same period of 2008，2009 and 2012，water from inside and outside of Yulong copper area in Tibet are sampled to analyze its heavy metal ions and hydrochemical status.The results show that，the contents of Cu，Zn ions are higher in water with hydrochemical type as sulfate and pH value 5.57.Weathering and dissolution of sulfide results in SO₄^2- anomaly in the water，and this anomaly is positively correlated with Cu²⁺.Large amounts of heavy metal ions are released from metal sulfide oxidation，and then are enriched with migration of underground water and surface water.Its concentration varies in the same trends with the deposit size and the occurrence position.There exists a genetic relationship between hydrogeochemical characteristics of Cu²⁺ and copper deposit types and scale.So it provides a good hydrogeochemical signal for exploring this type of ore deposits.

Key words: Hydrogeochemical, Mineralization of copper, Tibet Qulong ore district