| Summary: | <i>Amblyseius orientalis</i> Ehara is a predatory mite that belongs to the family Phytoseiidae. It is mainly found in Jiangxi, Shanghai, Guangdong, and other areas of China. Although <i>A. orientalis</i> is a dominant predatory mite species in China and is also important for agriculture and biological control, not many studies have investigated it. Thus, research on <i>A. orientalis</i> is necessary. However, its application in biological control is hindered by the absence of techniques for the mass rearing of <i>A. orientalis</i> in captivity. We conducted experiments to determine the growth, development, reproduction, and functional response of <i>A. orientalis</i> in this study by indoor single-head rearing at 25 ± 1 °C, 65 ± 5% relative humidity, and a photoperiod of a 16 h:8 h light/dark cycle under laboratory conditions. The results of the age stage, two-sex life table showed that the individuals in the pollen + yeast and pollen + yeast + sucrose groups had significantly higher oviposition period, fecundity, net reproductive rate (R<sub>0</sub>), and gross reproduction rate (GRR) than those in the pollen group. The results of the function response showed that the pollen + yeast + sucrose group was the most favorable for captive breeding of <i>A. orientalis</i> and had the best predatory ability along with rejuvenation and recovery ability. The results of the study provided a theoretical basis for indoor rearing, propagation, and utilization of <i>A. orientalis</i>.
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