Abstract: Through the mineral survey in northern Three-River area, the exploration of super large deposits becoming further clarified by the identification of geological anomaly and dimensions of known deposit with new geologic clues in periphery. It becomes a should-be-considered question to continuously expand prospecting result in plateau geological survey. To grab the opportunity of national implement of 358 and province-ministry cooperation in exhaustive exploration, complete the deployment in northern Three-River area and expand prospecting result.