Abstract: In order to probe the new way of konjac breeding, we adopt different the dosages 60Co-γto irradiate sprout konjac crons, after planting there are some mutation plants such as stunt, etiolute, fernliking ,albino and leaf color dark green properties. At same time, we also know the LD100 of konjac is 3KR, LD50 is 1.5KR.