Clubroot, caused by a soil borne fungus Plasmodiophora brassicae Woronin, is a common disease of cabbages and other plants belonging to the genus Brassica, which is the most extensively cultivated vegetable crops worldwide. This present study was to evaluate the utilization possibility of SNP primers, which we designated as molecular markers linked to disease resistance based on B. rapa genome, it may be possible to apply them to B. oleracea, and to survey SNP marker related to clubroot resistance of cabbages. In total, 425 SNP markers can be applied to B. oleracea were selected from 8,000 SNP markers based on B. rapa genome linked to disease resistance. New 123 SNP markers of them were designed to be analysed to High Resolution Melt (HRM), and tested for clubroot resistance using 6 cabbage varieties, including 3 clubroot resistances (YR Chunrok, YR Dongjanggun, and Grandmart Cabbage) and 3 susceptibilities (Chungam-45, Bogam-1, and Junggam-21). Of them, 118 SNP primers amplified cabbage genomic DNA using HRM analysis, suggesting that it is possible to apply SNP markers based on B. rapa genome to B. oleracea. A total of 4 candidate SNP markers related to clubroot resistance were detected at 80.2℃ of melt temperature in BRS6, 79.2℃ in BRS18, 82.2℃ in BRS79, and at 84.4℃ in BRS114, respectively. These results provide valuable information that can be used for the utilization of the genus Brassica genome study and breeding for clubroot resistance in cabbages.