This study was performed to select the high-yield soybean cultivar suitable for the mid part of Korea and to provide as a basic data for improving productivity of the farmhouse. To this, Daewon as a control and four soybean cultivars such as Uram, Taeseon, Saegeum and Seonpung soybean seeds known that high-yield varieties developed after 2010 were selected. Growth characteristics and functional isoflavone contents of five soybeans were field tested at the field in Goesan, Chungbuk during 2014 and 2015. In comparison with Daewon, maturity date was recorded the earliest at Taesun with 15^th Oct. Height of the first pod for the mechanical harvesting have a benefit to Uram (16.8 cm) and Taeseon (14.6 cm), however; shattering percentage of Taeseon were showed the high value of 11.2%. Productivity of Uram, Seonpung and Taesun were increased with 20, 9, and 5 %, respectively, compare to that of Daewon. Total isoflavones contents (μg/g) of five soybeans were ordered as Saegeum (1222.2) > Uram (1111.9) > Seonpung (897.2) > Daewon (885.8) > Taesun (829.5). Total isoflavones contents when soil mulching compare to the non-mulching were increased 206.6 μg/g at Daewon and 460.8 μg/g at Uram soybean.