Super large grain large green soybean varieties are Tongdou 6. According to the query related to public information shows: large grain type vegetable soybean new varieties of soybean 6, is Qidong City, green source of soybean research institute raised vegetable soybean new varieties,, in 2007 through the Jiangsu Provincial Variety Validation Committee validation. The variety of medium maturity, light green seed coat, strong seedling potential, steady growth, limited podding habit. The height of the plant is 70-80 centimeters, the stalk is thick and strong, the plant is more compact, the leaf color is dark green, and the effective branching is about 4. Flowers purple, strong pods, green beans grain large skin thin, good flavor, 100 pods fresh weight of more than 380 grams, 100 grains fresh weight of more than 90 grams, 2-3 grains per pod, mu yield green pods 800-1000 kilograms.