It had been more focused that the hydroc arbon was found in country roc ks，minerals and their enclusions in many hydrothermal deposits． Hydrocarbon was the important product from organic m atter during the development of fluid flow．It was just in a fore—research region that using hydrocarbon for mineral exploration or forecast on buried ore deposits． the basic theory of this kind research was only in the phase of experim entation and need to be im proved．The research work based on a lot of gold deposits had been done． It was found that the anom alous m odel of hydrocarbon on gold deposits was contacted with im miscible fluid phase of fluid flow． Scatter plot maps of heavy— light hydrocarbon from different geological body in some gold deposits also give showing for the ore—form ing background，m etallogenic factors and epoch． These work were helpful for basic—theory researchs of application for hydrocarbon in prognosis buried gold deposit