[Aim]  To assess the feasibility of rearing Sitotroga cerealella on paddy rice, to determine if the large-scale production of S. cerealella eggs for rearing Trichogramma spp. for biological control is possible in regions where barley resources are scare but rice is abundant. [Methods]  A feasibility study for rearing S. cerealella  on paddy rice was conducted under laboratory conditions by comparing various biological indicators of S. cerealella  and a quality control index for Trichogramma spp.. [Results]  The larval boring rate and adult emergence rate of S. cerealella reared on paddy rice were 89.6% and 88.9%, respectively. One kilogram of paddy rice could yield 1 976 S. cerealella moths, which produce 13.4 mL (approximately 9.0 g) of eggs. The average body length and forewing width of female moths were 5.5 and 10.1 mm, respectively, and those of male moths were 5.1 and 9.6 mm, respectively. The average length and width of S. cerealella eggs were 0.6 and 0.2 mm, respectively. Using S. cerealella eggs reared on paddy rice to rear T. ostriniae resulted in a parasitism rate of 88.8%, an emergence rate of 96.0%, a female ratio of 58.9% and a deformity rate of 7.8%. These parameters were not significantly different to those of barley-reared S. cerealella (F=0.089，P=0.935；F=0.885，P=0.443；F=0.224，P=0.835；F=0.141，P=0.895). [Conclusion]  Rearing S. cerealella on paddy rice enables the mass of Trichogramma spp. in regions where rice is abundant and barley is not commonly grown.