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本文对１９８５～１９９３年所测山西省家蝇对溴氰菊酯、二氯苯醚菊酯、敌敌畏的抗性结果做了系统分析。结果显示，家蝇对溴氰菊酯的抗性分２个阶段，第１阶段（１９８５～１９９０年）抗性增长较快，第２阶段（１９９１～１９９３年）抗性平稳增长，分析原因是由于药物前期的广泛使用，后期的控制使用、混合用药、轮换用药以及药物本身的性质所致；对二氯苯醚菊酯的抗性产生和发展也形成两个阶段，第１阶段（１９８５～１９９０年）抗性产生并缓慢增长，第２阶段（１９９１～１９９３年）抗性迅速增长，其原因是该药使用历史短及其本身的性质和近几年复配制剂广泛使用造成的，敌敌畏的抗性无明显的阶段性，呈缓慢上升状，但低于全国１９９２年ＬＤ５０平均值。
This paper systematically analyzed the resistance results of housefly to deltamethrin, permethrin, and dichlorvos from 1985 to 1993 in Shanxi Province. The results showed that the resistance of housefly to deltamethrin was divided into two stages. The resistance in stage 1 (1985-1990) increased rapidly and the resistance in stage 2 (1991-1993) increased steadily Due to the extensive use of pre-drugs, the late use of controlled, mixed drugs, rotation of the drug and the nature of the drug itself; resistance to permethrin production and development also formed two stages, the first stage (1985 ~ 1990), and the rapid increase of resistance in Phase 2 (1991-1993) due to its short history of use and its own nature and the widespread use of compounded formulations in recent years, The resistance was no obvious stage, showed a slowly rising, but lower than the national average of LD50 in 1992.