Abstract：‘Hacaidou No. 12’is a new dwarf snap bean developed by crossing dwarf snap bean 96-9 as female parent and‘Zihuayoudou’as male parent after 6 generations’consecutive pedigree breeding. It is early-maturing and takes about 55 days from sowing to harvest．Its plant height is 50 cm．It has many branches with strong growth vigor．Its flowers are white in color with green tender pods．Its pod shape is flat stripe．Its pod length is 13.5 cm，pod width is 2.2 cm．Its surface is of meat quality．Its appearance has good commercial property．It has typical quality of North-east oil bean．Its resistance to anthrax is much stronger than that of‘Hacaidou No. 5’．It can yield about 15 t?hm-2．It is suitable for cultivation in protected and open fields in Heilongjiang Province．
