Abstract：New bitter gourd variety‘ Duotai No.1’ is developed by crossing inbred line‘ G189-4’ as female parent，and inbred line‘ G102’ as male parent. The P-polypeptide content of this new variety is high as 1.046 mg·g^-1（FW）. The fruit has green peel，and it is of cylinder shape，28-30 cm in length，6 cm in width and 1.1 cm in thickness. It tastes a little bitter. The single fruit weight is about 400 g，and average yield is 51 t·hm^-2. It is resistant to powdery mildew and blight in fields. It is suitable for cultivation in Southern China in spring and for processing application.