Abstract: ‘Wanwu 402’is a high-quality cold-resistant savoy. It was bred by crossing the male sterile line MS-14-1041 as the female parent with the inbred line YW-13-01 as the male parent，followed by selective breeding. The plant height 19–21 cm，the average single plant weighs 487 g，the leaves are nearly circular，the edges are rolled downward，the meat is thick，the outer leaves are green，the heart leaves turn yellow，the leaf color becomes yellow，the leaves are wrinkled，and the leaves are wrinkled. Boom dense，the number of leaves is about 19 pieces. It has strong cold resistance and low temperature to –8 ℃. After frost，the quality is excellent，there are few crude fiber，good taste，soft and glutinous，and good flavor. The yield is about 60 585 kg · hm^-2. It is suitable for autumn cultivation in Anhui，Shanghai，Jiangsu，Henan and other places. The southern broadcast period is from mid-August to mid-October，and the northern broadcast period is from late July to mid-September.

Key words: savoy, cold-resistant, cultivar