Abstract: Fengtai high ore concentration area has a relatively high degree of research on the metallogenesis of gold deposits.In order to guide prospecting,for the first time,the metallogenic prediction of gold deposits in this area is carried out based on MRAS evidence weight method.On the basis of fully collecting various geological,mineral,structural,physical,chemical remote data,the study systematically summarized the metallogenic laws of gold deposits,constructed prospecting indicators of gold deposits in this area,extracted and constructed 12 predictive factors such as Xinghongpu Formation,faults,geochemical anomaly,remote sensing as evidence factors.The Trinity prospecting theory is applied,and the range of the Devonian strata exposed in Fengtai high ore concentration area is used as gold prediction unit.After calculating the posterior probability,5 prospecting target areas are delineated according to the geological characteristics of gold deposits in Fengtai high ore concentration area.