The Zhuyuangou Mo -deposit in Ruyang, Henan Province is a porphyry type molybdenum deposit. By nearly three years of exploration in this deposit, more than ten thousand meters of drilling was done, and 8 000 samples were collected. All the ores are of fine-grained granite-porphyry type. Studies on the petrology, mineralogy, geochemistry and geological characteristics suggest that the mineralized alteration is similar to that of the typical porphyry deposits. And the geochemical anomalies and granite-porphyry rock bodies are the principle prospecting indicators, which will be helpful for prospecting ore bodies in the Taishanmiao granite body.