本文报导了氯氰菊酯(Cypermethrin)在番茄上的残留试验及样品分析方法。在夏季,番茄生长期喷施50ppm的氯氰菊酯溶液,喷药后10天,药液在番茄果上消失80％以上,残留半衰期约4天。番茄的生长稀释,降低了番茄中的农药残留水平。在番茄成熟期,喷施10％氯氰菊酯乳油25～100毫升/亩,施药2次(2次间隔10天),第二次施药后1天,在番茄全果中的农药残留量低于0.2毫克/公斤。在去皮的番茄果肉中未检出农药(残留量低于0.003毫克/公斤)。 This paper reports the residue testing and sample analysis of Cypermethrin in tomato. In the summer, 50 ppm of cypermethrin solution was sprayed in tomato growth stage. After 10 days of spraying, the liquid medicine disappeared by more than 80% in tomato fruit and the residual half-life was about 4 days. Dilution of tomato growth, reducing the level of pesticide residues in tomatoes. In mature tomato, spraying 10 ~ 10% cypermethrin EC 25 ~ 100 ml / application 2 times (2 times interval 10 days), one day after the second application, the total pesticide residues in tomato is less than 0.2 mg / kg. Pesticides were not detected in peeled tomato pulp (residue less than 0.003 mg / kg).