Radioactive ingredients were spread by accident of Fukushima nuclear power plant, especially 137Cs was the most concerned contamination in wide range of Tohoku region in Japan. Cs uptake and accumulation by seedlings of common vegetables such as cabbage (Brassica oleracea var. capitata) and broccoli (Brassica oleracea var. italica) were compared with that of sunflower (Helianthus annuus), which exhibites high 137Cs accumulation, in agar and hydroponics system. In the uptake experiment on agar medium, sunflower accumulated 10-fold higher stable Cs than cabbage and broccoli in shoots and roots. Compared with hydroponics experiment, the Cs accumulation of the sunflower was several fold higher in the agar experiment. However, cabbage and broccoli exhibited at the same level of Cs accumulation to each other in both experiments. Additionally, Cs absorption of cabbage and broccoli was terminated within the first 2 hours in hydroponics. It was suggested that Cs was adsorbed abruptly on the root surface of these vegetables, then terminated because of slow Cs uptake by them and saturation of the Cs adsorption sites available on the plant surface. The vegetables accumulated only small amount of Cs into edible parts compared with sunflower.