Abstract: Based on the data of 1 ∶ 200 000 regional geochemical stream sediments in Yuanma Basin, the authors analyzed geological and geochemical characteristics as well as the discrimination and extraction of regional anomaly information of the Jiuquwan copper ore deposit in Yuanma basin. Then the authors established a typical geological?geochemical prospecting model for the Jiuquwan copper ore deposit, and successfully delineated the prediction area. It can thus be seen that the method is feasible and effective.