Air reverse circulation drilling technology is a mature and advanced process abroad, but is relatively limited in China. Based on the research in recent years, especially a contract test between air reverse circulation drilling and core drilling was carried out in Xiaolonghe tin polymetallic deposit of Yunan Tengchong in 2015, the formation, mineralization bodies loss and construction efficiency were studied. The research shows that air reverse circulation sampling drilling has the advantages of efficient construction, low cost and good in geological prospecting. Meanwhile, the limitations of this technology in geological prospecting and some problems that need further study are also found out.