Channel catfish (Ictaluros punctatus) is a new introduced species in Vietnam therefore need to study about reproductive biology aiming at seed production. The paper presents result of study on reproductive biology of channel catfish culturing in Northern Vietnam. It showed that channel catfish can mature in pond culture in Vietnam. Male and female could be differentiated by morphology and primary ,reproductive characteristics. The maturity index is highest in May (14 percent). Spawning season is from Aprif to June and mainly in May. The fish is first spawning at age of r with size of 1.5 kg/female and 1.3 kg/male. Estimated absolute spawning capacity varied from 7,345 to 30,820 eggs/female. The relative spawning capacity was from 5,258.7 to 7,832.9 eggs/kg female. Embryo development time was 106 to 110 hours at 28-30°C and 130-135 hours at 25.5-28°C.