【Abstract】 Objective To investigate the breeding situation of mosquitoes in various plashes in urban areas of Chongqing and provide scientific evidence for mosquitoes control. Methods Direct observational method was used to investigate the breeding of mosquitoes in small?sized containers such as miniascape, crock, kettle and tyre, but direct observational method and scoop sampling method used in the  large and medium?sized waters like water pool and lake. The proportion of breeding was recorded. Some larvae were collected and taken back to the laboratory to  be classified. Results Mosquito larvae were found in all kinds of plashes except for fishing pond and lake. The average positive rate in small container was 10.65% (1.45%-91.11%), while it was 18.42% in the large and medium?sized waters. The dominant species were Aedes albopictus and Culex pipiens quinquefasciatus, accounting for 58.18% and 29.56% respectively. Conclusion The management of plashes mosquito should not be neglected in the mosquito control.

【Abstract】 Objective To learn the infestation situation of indoor cockroach in Chongqing, and control effectively its density to accumulate experience for its large scale control. Methods The residual spraying and toxic baits were used to kill cockroach, and the  control efficacy was evaluated by chemicals simulating method and visual method. Results The infestation rate reached 27.75% before treatment, and there was significant difference among the infestation situation of cockroach at six different places（χ2＝91.272, P＜0.01）.After treatment, it decreased to 6.46% and the killing rate was 76.72%. The control efficacy in the school was the best, and the killing rate reached 91.95%. The second was in the farm product trade market with the value of 86.19%. It was the worst in five small shops, and its killing rate to cockroach was only 60.79%. There was also significant difference among the control efficacy at six places（χ2＝55.235, P＜0.01）. Conclusion The control efficacy to cockroach was very distinct, which effectively reduced the density of cockroach. The results also showed many factors such as environment, work force and concern degree would affect the control effect. The environmental condition was better, the control of cockroaches was easier. The work force was bigger and the degree of concern was higher, the killing effect was more remarkable.