In this paper authors take both deep prospecting and covered area prospecting into consideration. Because traditional methods and notions don′t work well in deep metallic ore prospecting, development of new theories, methods and technologies are urgently needed. It is now in a critical period for establishing a new system of geological exploration technologies, which is featured by information technology, ever-increasing detection depth, strengthened comprehensive integration and improved rapidity and efficiency. The strategic guideline for key technologies used for deep metallic prospecting is to give priority to practicability, stress on originality, reinforce integrality and improve performance. In this way, importance should be attached to improvement of technological innovation, integration and introduction and application, interaction between the central and local governments, between governments and enterprises, between the non-profit geological survey and commercial geological survey；other aspects such as improved capability of deep survey in metallogenetic region (belts), capability of prediction and target selection for deeper area, capability of discovering and locating deep deposits (orebodies) and capability of improving multi-technology integration, which will lead to an acceleration of technological development strategy changing from “rapidly introduced” to “performance innovated”. Meanwhile, based on opinions from relevant experts, this paper selected top 20 fields regarding key technologies of deep ore- prospecting.