Abstract: The study was aimed to determine and evaluate the efficacies of 20% flubendiamide WDG, 24% tebufenozide SC and its mixtures on Chilo suppressalis in the paddy field, which would provide technical support for its extension and application. The efficacies of 20% flubendiamide WDG, 24% tebufenozide SC and its mixtures on C. suppressalis in the paddy field were tested using foliar spray method. Results showed that, the insecticidal effects of 20% flubendiamide WDG in the concentrations of 20-30 g a.i./hm² applied at the 3 instar larvae stage and moth stage of C. suppressalis were above 90% on C. suppressalis within 7 days and 14 days after treatment, which were no significantly different compared with that of 20% chlorantraniliprole SC in the concentration of 30 g a.i./hm². The insecticidal effects of 24% tebufenozide SC in the concentrations of 80- 160 g a.i./hm² applied at the 3 instar larvae stage of C. suppressalis were below 79% on C. suppressalis within 7 days and 14 days after treatment, which were significantly lower than that of 20% chlorantraniliprole SC in the concentration of 30 g a.i./hm². The insecticidal effects of 24% tebufenozide SC in the concentrations of 100-160 g a.i./hm² applied at the moth stage of C. suppressalis were above 93% on C. suppressalis within 7 days and 14 days after treatment, which were no significantly different compared with that of 20% chlorantraniliprole SC in the concentration of 30 g a.i./hm². The insecticidal effects of 20% flubendiamide WDG + 24% tebufenozide SC on C. suppressalis were above 91% in the concentrations of 22.5 g a.i./hm²+40 g a. i./hm² and 20 g a.i./hm²+100 g a.i./hm² applied at the 3 instar larvae stage of C. suppressalis within 7 days and 14 days after treatment, and above 95% in the concentrations of 22.5 g a.i./hm² +40 g a.i./hm², 20 g a.i./hm²+ 100 g a.i./hm², 10 g a.i./hm² + 80 g a.i./hm² and 7.5 g a.i./hm² + 120 g a.i./hm² applied at the moth stage of C. suppressalis, which were no significantly different compared with that of 20% chlorantraniliprole SC in the concentration of 30 g a.i./hm². At the same time, all treatments had good efficacies on Cnaphalocrocis medindis. Flubendiamide, tebufenozide and its mixtures had good efficacies and permanent effectiveness on C. suppressalis, were the ideal pesticides for controlling C. suppressalis in the paddy field.