Abstract:The illegal exploitation of mineral resources will not only cause the waste of mineral resources, but also cause serious damages to geological environment of the mine. It is not conducive to the protection of ecological environment. Based on high resolution satellite remote sensing images, by using GIS spatial data processing, remote sensing monitoring of illegal mining activities to mineral resources in the northern Yunnan province has been carried out. Through field verification, remote sensing dynamic monitoring datas of mineral resources exploitation in five years have been gained, illegal plots of the temporal and spatial trends and causes have been analyzed, and the corresponding countermeasures and suggestions have been put forward. It will play an important role in maintaining mining order, protecting environment and promoting sustainable development and utilization of mineral resources. It also provides data support and decisionmaking basis for law enforcement supervision in Yunnan province.