‘Huanai B1102’ is a mini Chinese cabbage hybrid bred by crossing self imcompatible lines‘ 9051’and‘ 9012’．It is suitable for planting in spring and autumn．It takes 70 days from sowing to harvest．It has high uniformity．Its leaves are dark green in color with little wrinkle．Its head is of tube shape with yellow inside leaves．The single head weight is about 750 g．It can yield about 90 t·hm^-2．It tastes good and has superior quality．It is highly resistant to virus disease，black rot，and resistant to downy mildew．It is suitable to be cultivated in Beijing，Gansu，Hebei，Yunnan Provinces，etc．It has been extended to over 200 000 hm² since 2011．