Abstract:Gangou Au polymetallic deposit is a small gold mine which has been explored for more than 27 years in western Yunan province. New geological reserves continue to rise in recent years, and have been paid more attention by geologists. In this paper, through analysis and comprehensive study on metallogenic geological background, geological characteristics of mines and ores of Gangou gold polymetallic deposit, from the aspects of analysis, sequence and results of mineralization respectively, the metallogenic regularity of gold polymetallic deposit has been summarized, and prediction for ore prospecting in the deep part and surrounding areas have been carried out. Prospecting direction in the the deep part has been furtherly pointed out.