Abstract Cuilu is a new cucumber F1 hybrid developed by crossing self line 96481-1-1 with 8273-1-12-10-6. It grows vigorously with high resistant to downy mildew and Fusarium will. In autumn it takes only 40-45 days from sowing to first harvesting. Average fruit weight is about 150 g. Fruits are green,sweet and crispy with high marketable percentage. The fruit neck is about 2.6 cm which is about 1/7 of fruit length. It yields 26.8 t.hm-2 ,91.6 % higher than that of Jinyan No.4 .