**Objective** To investigate the resistance status of *Blattella germanica, Aedes albopictus*, and *Musca domestica* to commonly used insecticides in Jiaxing, and to provide a scientific basis for the development of reasonable and effective prevention and control measures. **Methods** The residual film was used to determine the median knockdown time (KT_{50}) of propoxur, beta-cypermethrin, dimethyl dichloro-vinyl phosphate (DDVP), deltamethrin, and acephate against *B. germanica*. The WHO standard test kits were used to measure the mortality of *Ae. albopictus* at diagnostic doses of propoxur, beta- cypermethrin, deltamethrin, permethrin, and malathion. Micro-topical application was used to determine the median lethal doses (LD_{50}) of propoxur, beta-cypermethrin, DDVP, deltamethrin, and permethrin against *M. domestica*. **Results** *Blattella germanica* showed moderate resistance to deltamethrin and DDVP, with resistance ratios of 8.21 and 5.33, respectively, showed low resistance to beta-cypermethrin, with a resistance ratio of 4.31, and was sensitive to propoxur and acephate, with resistance ratios of 1.58 and 1.05, respectively. The mortality rates of *Ae. albopictus* to beta-cypermethrin, deltamethrin, and permethrin were 100%, 100%, and 98.67%, respectively, indicating that *Ae. albopictus* was sensitive to these insecticides. However, its mortality rates to malathion and propoxur were 97.33% and 90.67%, respectively, suggesting possible resistance. *Musca domestica* demonstrated moderate resistance to DDVP (resistance ratio:10.47), low resistance to deltamethrin (8.22) and permethrin (8.13), and sensitivity to propoxur and beta-cypermethrin. **Conclusion** As shown from the resistance criteria, *B. germanica, Ae. albopictus*, and *M. domestica* in Jiaxing have different degrees of resistance to commonly used insecticides. Therefore, surveillance of insecticide resistance should be highlighted for rational use of insecticides.