[Objectives]  To solve various problems associated with current methods of rearing Idea leuconoe (Eriehson) in captivity, including mass death of adults due to high temperatures and empty, or dehydrated, eggs. [Methods]  The survival, mating success, number of eggs per female and hatchability of I. leuconoe reared in a newly developed type of net-room, and in an ordinary net-room, were measured and compared. [Results]  The pupation rate of larvae and the eclosion rate of pupae in the new facility were 90.75%±1.12% and 91.3%±2.43%, respectively, both significantly higher than those in the ordinary net-room. Survival of larvae to adulthood in the new facility was (82.93%±2.55%), also significantly higher than that in the ordinary net-room. Compared to the ordinary net-room, the survival of fifteen-day-old adults in the new facility was markedly higher; 81.20%±2.10%. The mating success of females (81.70%±4.80%), number of eggs per female (269.32±9.85), and the hatchability of eggs (85.88%±1.93%), were significantly higher in the new facility than in an ordinary net-room. The new captive breeding facility provided a better microclimate in which the temperature was significant lower, thereby avoiding mortality through heat stress. [Conclusion]  The survival, mating success and fecundity of I. leuconoe reared in a newly developed rearing facility were all significantly higher than those in an ordinary net-room. Use of this new type of facility should therefore increase the profitability of commercially farming this species.