To clarify the resistance level to dimefluthrin in Aedes albopictus and to select a strain that is resistant to dimefluthrin，the mechanisms and genetics of the resistance should be studied. Cross and backcross tests were conducted to caculate the 95% confidence interval for the degree of dominance in the two hybrid populations. Additionally，the actual and expected curves of the four groups of backcross offspring were observed，and the actual and expected chi-square values of the four groups of backcross offspring were calculated to determine the degree of dominance （D），identify cytoplasmic influencing factors，and elucidate the genes associated with the heredity of the dimefluthrin-resistant population of A. albopictus. The results indicated that the resistance frequency in the FRS population is close to that of the resistant strain （RR），while the sensitivity of the FSR population is notebly high. The FRS and FSR populations did not overlap，indicating a significant difference between the FRS and FSR hybrids. Furthermore，the actual response of the LD-P line for BC1 （FSR♀×SS♂），BC2 （FRS♀×SS♂），BC3 （FSR♀×RR♂） and BC4 （FRS♀×RR♂） differed from the expected response of the LD-P line，with the actual Chi-square value （χ²） being significantly greater than the expected Chi-square value. Therefore，the inheritance of resistance to dimefluthrin in A. albopictus is polygenic and exhibits maternal effect，which can lead to the rapid development of resistant populations. When using dimefluthrin to control A. albopictus，it is essential to consider several factors that may negatively impact insecticidal efficacy and contribute to the development of resistance. These factors include dosage，application methods and the timing of insecticide use. Different mosquitoes species may have different hereditary modes of resistance to different insecticides，therefore，it is crucial to monitor the development and application of insecticides carefully.