[目的]明确番茄灰霉病菌对咯菌腈的敏感性及其与其他杀菌剂之间是否存在交互抗性。[方法]采用菌丝生长速率法测定灰霉病菌对咯菌腈、多菌灵、乙霉威、腐霉利、嘧霉胺和啶酰菌胺的敏感性。[结果]咯菌腈对106株野生菌株EC50的平均值为(0.0135±0.0096)mg/L。咯菌腈与其他5种杀菌剂之间均不存在交互抗性。[结论]野生菌株对咯菌腈的敏感性的平均值,可作为番茄灰霉病菌对咯菌腈的敏感基线。咯菌腈可广泛用于番茄灰霉病的防治。 [Objective] The research aimed to clarify the sensitivity of Botrytis cinerea to fludioxonil and whether there is interaction resistance with other fungicides. [Method] The sensitivity of Botrytis cinerea to fludioxonil, carbendazim, dimethoprim, procymidone, pyrimethanil and boscalid was determined by mycelial growth rate method. [Result] The average EC50 values ​​of fludioxonil to 106 wild strains were (0.0135 ± 0.0096) mg / L. There was no cross-resistance between fludioxonil and the other five fungicides. [Conclusion] The average value of wild strain susceptibility to fludioxonil could be used as a sensitive baseline for fludioxonil in Botrytis cinerea. Fludioxonil can be widely used in the prevention and treatment of tomato gray mold disease.