[Objectives]  To determine the effects of sublethal concentrations of pymetrozine, which is widely used to control planthoppers in rice fields, on the offspring of Cyrtorhinus lividipennis, a natural enemy of brown planthopper (Nilaparvata lugens Stål, BPH). [Methods]  The filter membrane method was used to treat C. lividipennis nymphs with a sublethal dose LC₂₀ of pymetrozine. The tendency of nymphs to orientate towards rice plants infested with N. lugens eggs, their predation rate, fertility, longevity, and the relative expression of V_g (vitellogenin) in offspring treated with sublethal concentrations of pymetrozine, were measured. [Results] The selectivity of C. lividipennis for rice plants damaged by N. lugens vs healthy rice plants, adult longevity, fecundity and the relative expression of V_g in offspring, were not significantly affected by exposure to sublethal concentrations of pymetrozine. When the density of N. lugens was high, the predatory capacity of the offspring of the ♀_Pymetrozine×♂_Pymetrozine treatment group significantly increased to 20.4 % and 28.9 % higher than that of the ♀_Control×♂_Pymetrozine treatment and control (♀_Control×♂_Control) groups, respectively. [Conclusion]  Exposure to a sublethal dose of pymetrozine has no adverse effect of on reproduction and longevity of the offspring of C. lividipennis. In fact, a sublethal concentration of pymetrozine actually increased the capacity of offspring to prey on N. lugens. These results lay benefit the development of sustainable, integrated, control strategies for N. lugens incorporating both chemical and biological control in rice fields.