Abstract: Combing with the geological prospecting achievements of Chengmengshan copper mine,the ore-forming geological background of Chengmengshan copper mine is analyzed in detail,the ore deposit characteristics is discussed in depth from the two aspects of the geological characteristics and geochemical characteristics of the ore-bodies.Based on the above analysis results,in order to analyze the distribution regularity of the deep ore-bodies,based on the MapGIS-TDE three-dimensional visualization system,the data of 328 drillings is obtained and the three-dimensional geological metallogenic model of Chengmengshan mining area are established.Based on the three-dimensional geological metallogenic model,the resources potential and deep metallogenic conditions are predicted effectively.The results show that the prospecting potential of the deep and margin of Chengmengshan mining area is huge,the ore-bodies are distributed with column shape on the whole and they are controlled by the rock mass occurrence space,slightly NW tendency,the ore-bodies extension in the deep is still large,the maximum thickness of the ore-bodies is 269.10 m（the ore-bodies are still exposed thoroughly),the above prospecting prediction results is consistent to the geological prospecting achievements basically,therefore,the research results in this paper has some reference for the further deep prospecting work in Chengmengshan mining area.

Key words: Deep prospecting, Ore-forming geological background, Ore deposit characteristics, Three-dimensional geological metallogenic model, Metallogenic conditions, Prospecting potential