Abstract:‘Keli No. 1’ is a pumpkin F1 hybrid developed by crossing S31-1 as female parent and S4-1 as male parent.The plant is sprawling with medium growth vigor, less branch, small leaf blades and short internodes. The first female flower sets on the 9th node. Its young fruit is of oblate shape, and is green in color. The single fruit is 0.5-1.5 kg in weight, about 9 cm in diameter and about 13 cm in length. Its tender melon has good waxy, starch, and superior quality. In open field in spring and protected field in autumn, the tender fruit can yield 22.5-30.0 t·hm-2. In protected field in early spring,the tender fruit can yield about 45 t·hm-2. It is suitable to be planted in Zhejiang Province and areas with similar cultivation conditions.