Abstract: The traditional method of mineral resources supervision in open-pit mines is single, and it is hard to cover completely.Based on the characteristics and advantages of UAS survey and mapping technology, the paper puts forward the method of UAS survey and mapping technology for open-pit mine supervision.It designs to produce high-precision DOM, real scene 3D models and DEM for mineral resources monitoring.The paper establishes multi-source monitoring data management system to comprehensively supervise the mine, as well.It provides strong technical support for the mineral resources supervision work, which can greatly improve the efficiency and accuracy of the work.At last, the paper takes the supervision work of an open-pit mine in southern Zhejiang province as example, and proves the higher application value of this method.