关键词: 家蝇, 抗性, 动态

Abstract: Objective:To find out the dynamic of resistance in housefly and provide the scientific evidance to control the appearance and development.Method:The trace drop method was used.Results:The resistance to Dichlorovos and Cypermethrin was in high level from 1995 to 1998,but it did not develop and came to decline in the whole;The resistance to Phenothrin was modial or low level.All of them came to decline except Sheyang county;The resistance to Deltamethrin was lower in urban district of Yancheng city and Jianhu came to decline and to sensitive level.Conclusion:According to the appearance and development of the resistance the integrated prevention measures including reasonable drug used should be taken.