Abstract：‘Guitian 612’is a new fresh sweet corn F1 hybrid developed by crossing sweet corn inbred line‘ATL122’as female parent and‘GTL990’as male parent．The plant type is semi compact，and the plant grows strongly．The growth period is 80-90 days for spring sowing to harvest fresh ears，and 70-75 days for autumn sowing．The fresh fruit ear is cylindrical，the ear length is 18-20 cm，the number of ear rows is 14-20 rows，the grain is yellow，and the yield of fresh fruit ear is 12.0-16.5 t · hm-2．In the south（southeast）area trial，88.0 points were obtained from the tasting and identification，including 19.2% of water soluble total sugar，9.0% of reducing sugar，and 13.6% of skin residue．In the south（southwest）area trial，86.6 points were obtained，including 16.2% of water soluble total sugar，5.9% of reducing sugar and 11.8% of skin residue．It is suitable for planting in fresh corn areas in southern China．
