Abstract:Mining is one of the six pillar industries in Kangding county. Mining development can promote "leapfrog development and long-term stability" in Tibetan area in Kangding county, and realize the strategic target of " three steps to walk ". It can increase the income of farmers and herdsmen, improve the people's livelihood, gurantee the construction of dominant mineral products deep processing base, and meet the supply of mineral products. Development of Sandiao gold deposit not only can injected fresh blood for the development of mining industry in Kangding county, but also are driving force of the development of other industries. It also restricts the development of other industries. In the development process, a series of ecological environment problems have been caused, such as the destruction of vegetation, induced geological hazards and damage to roads. From the view of ecological environment, related problems casued in the exploration of Sandiao gold deposit have been pointed out, the reasons casued these problems have been analyzed, and relative countermeasures have been put forward.