The difficulty of prospecting in the overburden area is not only related to the thickness of the overburden,but also closely related to the physical properties, hydrogeological conditions and ore body characteristics.Prospecting breakthrough in covered area is a systematic process,which needs to go through four stages of selection,target setting, positioning,verification and evaluation.There are problems of exploration selection,geological information detection and multi- disciplinary effective fusion.There are few previous studies on the breakthrough process and exploration technology system in the covered area,In practical application,it can improve the success rate of prospecting,and is included in the catalogue of advanced and applicable technologies for mineral resources conservation and comprehensive utilization (2019 Edition) of the Ministry of naturalresources.Based on the idea of “existing technology + combined with practical innovation”,the author summarizes and puts forward the“circular and asymptotic exploration technology system”for prospecting in thick coverage area.