Abstract: Risk factors adjusted discounted cash flow method applies to the exploration rights assessment of low exploration risk, low-level exploration sedimentary mineral, or stratabound type, porphyry-type hydrothermal deposits. "the Guidance to Determine Parameters of Mining Assessment" only gives the geological risk factors in mineral development for some wide-distribution and good-stability large coal-producing areas in northern China, especially Shanxi, Shaanxi, Inner Mongolia, Sinkiang, and other new major coal-producing areas. In this paper, the author proposed a set of solutions and specific operating procedures to determine the risk factors for other minerals and other areas.