[Objectives]  The resistance of Diaphorina citri populations to common insecticides in various areas of Jiangxi province was studied in order to rationalize insecticide use in this region. [Methods]  The leaf-dip method was used to measure the toxicity of Chlorpyrifos, Bifenthrin, Thiamethoxam, Nitenpyram and Chlorfenapy to D. citri in orchards in Shanggao (SG), Yihuang (YH), Nanfeng (NF), Ningdu (ND), Dayu (DY) and Xunwu (XW) counties, and resistance ratios were calculated according to cardinal reference toxicity values. [Results]  Resistance ratios (RR) of D. citri populations in SG, YH and NF counties to the routine insecticides were medium (9.01-15.01), whereas those in ND, DY and XW were high (128.36-308.82). Resistance of the DY population to Bifenthrin was 133.71, whereas resistance to this pesticide in the other five counties was medium (17.08-88.53). The resistance ratios to Thiamethoxam ranged from 13.62 to 25.92, which is low to medium, whereas resistance ratios to Nitenpyram ranged from 77.37 to 257.71, which is high. Resistance ratios of D. citri populations in all counties to Chlorfenapy were similar to those found for Bifenthrin; medium, except for DY which was high. [Conclusion]  The resistance ratios of D. citri populations in navel orange growing areas of southern Jiangxi province to all five common insecticides is high, much higher than those in other parts of Jiangxi province. This suggests that insecticides should be used in rotation in these areas, and in limited amounts, to slow down the development of resistance.