Objective To study the resistance levels of mosquito larvae and adult insecticides of dengue transmission media in Dalian, Liaoning province, to provide scientific basis for the comprehensive prevention and control of Aedes albopictus. Methods The larvae and egg masses of Ae. albopictus were collected in the residential area of Dalian city from August to September 2017 and bred in the laboratory. The WHO recommended larvae dipping method and mosquito contact barrel method were employed in the bioassay. Results The resistance multiple of the larvae of Ae. albopictus to deltamethrin was 3.00, which was low resistance. The resistance multiples of the other four insecticides, such as β-cypermethrin, parathion, dichlorvos and permethrin were less than 3.00 and were sensitive. Aedes albopictus to malathion resistant population of adult primary (M), the mortality rate was 97.00%, of β-cypermethrin, permethrin and deltamethrin were sensitive group (S), mortality rates were 100%, 99.00%, and 98.00%. Conclusion Aedes albopictus in Dalian Liaoning province is low or sensitive to commonly used insecticides, which insecticides can be used for daily control of Ae. albopictus.

　　【Abstract】　Objective　To grasp the dynamic change of the population distribution and seasonal fluctuation of cockroach in Dalian. Methods　The baits and traps method was used in the surveillance. Results　There were 3 species of cockroaches, and Blattella germanica was the dominant species, accounting for 96.89%. Periplaneta japonica and P.fuliginosa accounted for 3.02% and 0.09% respectively. The activity peak of the cockroach was from July to  October. The order of cockroach distributed in different trade was farm produce trade market, residential area, restaurant, hotel and hospital. Conclusion　B.germanica was the dominant species in Dalian, suggesting that it should put the emphasis on the control of it in the future.