A tetrazolinone compound represented by formula (1):Wherein R1, R2, R3, and R11 each represents a halogen atom, a C1-C6 alkyl group, etc.； R4 and R5 each represents a hydrogen atom, a halogen atom, a C1-C3 alkyl group, etc.； R6 represents a C1-C3 alkyl group optionally having one or more halogen atoms, etc.； R7, R8, and R9 each represents a hydrogen atom, a halogen atom, etc.； R10 represents a C1-C3 alkyl group, etc.； and R12 represents a phenyl group optionally having one or more atoms or groups selected from Group P3, a phenoxy group optionally having one or more atoms or groups Group P3, etc., has excellent control activity against pests.
