Abstract:‘Xicai No.1’is a new mini-fruit watermelon F1 hybrid developed by crossing inbred line‘W101u’as female parent and inbred line‘hn07-1-1’as male parent.It belongs to the early maturing variety,the first female flowers appears at 7 to 8 nodes,and appears every 3-4 nodes.The fruit development period is about 28-30 days and whole growth period is 85-90 days.The plant growth is strong,and easy to sit melon.The fruit is oval shaped with green skin and deep green well defined pinstripe.The weight is about 2.0-2.5 kg,and the rind is about 0.4 cm in thickness.The flesh is mainly orange-yellow with a hint of red,and it is crisp and tasty.The center soluble solids content is about 13% and 11% near rind.The resistance to Fusarium wilt,gummy stem blight and anthracnose in the field is stronger than that of the control variety‘Xiaolan’.It yields about 39 t · hm-2,and is suitable for protected cultivation in early spring or late autumn in Shaanxi Province.