' Gangyu No.1' is a new tomato F1 hybrid developed by crossing GS619-54 as female parent and ZX1-53 as male parent.It is of unlimited growth type with strong growth vigor.The first inflorescence node sets on section 6-8.Its floral interval is 2-3 nodes.Its fruit is of flat round shape.The ripe fruits are of bright red color.The average fruit weight is 160 g.The soluble solids content is 5 %, VC content is 220 mg· kg-1.The total sugar is 4.0 % and the sugar acid ratio is 5.1.The malformation and cracking rate is 9.7 %.It has high commodity rate.Its fruit is hard and durable for storage and transportation.It is resistant to bacterial wilt and mid-resistant to virus disease.The average yield is about 112.5 t · hm-2.