Abstract: Liposcelis entomophila(Enderlein) is a worldwide pest that endangers food safety. It has become the dominant population of pests in China under the conditions of low temperature, low oxygen storage and low dose of pesticide.This study simulated the low temperature environment (5.0 ℃, 8.0 ℃, 11.0 ℃, 14.0 ℃, 17.0 ℃, and 20.0 ℃) and high temperature environment (35.0 ℃, 37.5 ℃, 40.0 ℃, 42.5 ℃, 45.0 ℃, and 47.5 ℃), and investigated the effect of temperature stress on the development and reproduction of L. entomophila.The results showed that the low temperature treatment below 14.0 ℃ and the high temperature treatment above 40.0 ℃ had significant effects on the survival of L. entomophila. There was no significant effect on the mortality of the adults with the increase of treatment time at 11.0 ℃, which indicated that L. entomophila has adaptability to low temperature. All adults of L. entomophila were killed after being treated at a high temperature of 47.5 ℃ for 160 min, indicating that the short-term treatment at high temperature could effectively control L. entomophila. The hatching rate was 55.56% and 51.11%, respectively for L. entomophila treated at 5.0 ℃ for 3 days and those treated at 45.0 ℃ for 120 min. The eggs had strong tolerance to high and low temperature stress.After treatment at high temperature of 35.0-45.0 ℃ for 120 min and low temperature of 8.0-20.0 ℃ for 3 days, the egg amount and F₁ hatching rate of L. entomophila were not changed significantly.The results demonstrated that temperature stress treatment could not significantly influence the reproduction ability of L. entomophila, which might be the main cause of the L. entomophila outbreak.