‘Lvyuan No. 7’ is a cucumber F₁ hybrid developed by crossing North China type female line‘72’as female parent and North China type inbred line‘R34’as male parent．The plant has strong growth vigor．The first female flower sets at the 4-6th node of the main vine，and later all nodes are female flowers．The commercial fruit is about 32 cm in length with short handle．Its peel is green and glossy with light wax powder，small tumor，small heart cavity．The fruit is prickly．Its flesh is light geen in color with good flavor and good quality．It is resistant to powdery mildew，and medium resistance to downy mildew．The average yield in greenhouse cultivation is 105 t · hm^-2．It is suitable for cultivation in Liaoning，Jiling，Shandong Province，etc. regions over wintering，in spring greenhouse and under plastic shelter．