The Da Hinggan Mountains metallogenic belt is one of the most important base metal mineralized zones in China. Mineral exploration, however, is very difficult in the northern part because of forest and swamp cover. The authors first selected the potential targets by data processing and interpretation of 1：20000 regional geochemical anomalies. Detailed soil survey clearly indicates that there might be some economic base ore bodies in the regional geochemical targets. The innovatory high density rock chip survey successfully defined the dimension of the mineralizations. The Shangkenguo superlarge Pb-Zn deposit was found after trenching and drilling the geochemical anomalies. The geochemical methods and idea resulting in successful discovery can be an example of mineral exploration in the forest and swamp landscape.