Disclosed are an oxadiazole compound represented by formula (I):;WhereinZ represents OC(═X)NR2R3 or OC(═X)YR4, etc.R1 represents a halogen atom or a C1-4 alkoxy group, etc.n represents an integer of any one of 0 to 4, etc.R2 represents a C1-10 alkyl group having one or more halogen atoms, or a C3-10 cycloalkyl group, etc.R3 represents a hydrogen atom or a C1-10 alkyl group, etc.R4 represents a C1-10 alkyl group having one or more halogen atoms, or a C3-10 cycloalkyl group, etc., andX and Y each independently represents an oxygen atom or a sulfur atom, and use thereof for controlling plant diseases.