The MRAS evidence weighting method was used to conduct prospecting prediction in Maqu high ore concentration area of the Dashui Gold Mine ore belt,and after deep drilling verification,significant breakthroughs in ore prospecting were made.Based on the analysis of metallogenic geological background and the study of typical deposits represented by Dashui Gold Mine,the secondary integration of ore-controlling elements of known deposits,regional geology,geophysical prospecting,geochemical exploration and remote sensing was made before the results were analyzed pertaining to their spatial association,the ore-prospecting model of post-magmatic hydrothermal gold deposit in the Maqu high ore concentration area was established,and various kinds of geological information prediction variables were extracted and constructed.Based on the MRAS evidence weighting method,grading evaluation of the prospecting and forecasting areas of A,B and C grade of post-magmatic hydrothermal gold deposits in the study area was conducted.Two garde Ⅰ prospecting targets were identified:Xinqu Gold Mine (Ⅰ-1)and Dashui Gold Field (Ⅰ-2),as well as three Grade Ⅱ prospecting targets:east of Xinqu (Ⅱ-1),Zhongqu Area (Ⅱ-2)and north of Geerke (Ⅱ-3).At present,drilling tests have been carried out on two Grade II prospecting targets among them,and one small gold deposit and two gold spots have been discovered.