Abstract：The authors amended the ore prospect regionalization and evaluation method based on the Expert Weights of Evidence that were proposed previously by the author and re-delineated and re-evaluated Au, Cu and Co ore prospect areas in the East Kunlun region, Qinghai. According to their potentials, the prospect areas of these metals were divided into classes A, B and C, and on that basis, the authors proposed the methods for combining several single-metal prospect areas into composite ore prospect areas and evaluating these composite prospects. A total of 25 composite prospect areas were finally delineated in the East Kunlun metallogenic belt of Qinghai, and they were also classified into classes A, B and C based on their ore potentials. The results are thought to be satisfying according to the numbers, sizes and distributions of the known Au, Cu and Co deposits (occurrences) in various composite ore prospect areas in the East Kunlun region, Qinghai. The delineation and assessments of composite ore prospect areas in the East Kunlun metallogenic belt, Qinghai, may provide a scientific basis for further arrangement of mineral prospecting work.