本文报道了氟氯氰菊酯在棉花和土壤中的残留分析方法和降解情况。样品经过液－液分配和柱层析净化可以较好地去除脂肪等杂质。采用气相色谱电子捕获检测器检测，最低检测浓度可达０．００３ｍｇ／ｋｇ，添加０．０２～１．０ｍｇ／ｋｇ标样，平均回收率为８８．５％～９６．３％（变异系数１．０％～６．０％，氟氯氰菊酯在棉花植株上的半衰期为１．６～２．９天，土壤中的半衰期为２．５天 In this paper, the residues of cyhalothrin in cotton and soil analysis methods and degradation. Samples after liquid-liquid partitioning and column chromatography purification can better remove impurities such as fat. The detection limit of gas chromatography electron capture detector was 0.003mg / kg. The average recoveries were 0.02% ~ 1.0mg / kg with the average recoveries of 88.5% ~ 96.3% (coefficient of variation 1 .0% ~ 6.0%, cyhalothrin in cotton plant half-life of 1.6 to 2.9 days, the soil half-life of 2.5 days