Quarantine Pest Research Facility (QPRF) had been built in Animal and Plant Quarantine Agency for study on exotic pests at 2018. This facility was constructed to prevent effective containment for preventing accidental escape of insects. We tested a developmental and susceptibility of pesticides (Fluxametamide, FLX and Hydramethylnon, HMT) on beet armyworm, Spodoptera exigua for testing containment level of QPRF. S. exigua showed 22.5 days at 28±1℃ and 26.5 days at 25±1℃ with 60±5% RH for entire life cycle. LC50 of FLX and HMT to 5th instar larvae for 24h revealed as lower than 1ppm and 100ppm, respectively. Also, there is no release of adults in QPRF and confirmed by sex pheromone trap during winter season.