The Taipinggou stream sediment anomaly was delineated by the new regional geochemical exploration method for forest-swamp landscape region. Three-grade verification showed that it is an ore-related anomaly with good ore-prospecting vista. A medium-size porphyry molybdenite deposit was discovered in successive exploration, which fully shows the ore-prospecting guiding role of the regional geochemical information and the effectiveness of the new regional geochemical exploration method for forest-swamp landscape region. The authors conducted a study of the distribution of the Taipinggou geochemical field, extracted anomaly information by using optimum residual anomaly method, analyzed anomaly characteristics, and investigated ore-prospecting orientation.