Larvae of Cnaphalocrocis medinalis (Guenée) were reared successfully on an artificial diet consisting of dried powders of rice leaves and INSECTA F-II (NIPPON NOSAN Co., Ltd.) at the ratio of 3:7. The larval period on this diet was 21.7 days at 25°C under 14L-10D. More than 80% of larvae developed into adults. Larvae were also reared successfully on a diet containing dried powder of paspalum or maize leaves.