The present invention disclosed fluoralkenyl compounds of general formula (I);wherein; R, R1, R2, R3, A and integers n, m and k are as defined in description. The present invention further discloses use of the compounds of general formula (I) to protect crops by controlling or preventing against undesired phytopathogenic microorganisms such as nematodes and phytopathogenic fungi.本發明公開了通式(I)的氟烯基化合物;其中;R, R1, R2, R3, A和整數,m和k如描述中所定義。本發明進一步公開了通式(I)化合物通過控制或預防不需要的植物致病微生物如線蟲和植物致病真菌來保護作物的用途。