A tetrazolinone compound represented by formula (1) (in the formula, R1, R2, R3, and R11 each represent a halogen atom, a C1-C6 alkyl group, or the like R4 and R5 each represent a hydrogen atom, a halogen atom, a C1-C3 alkyl group, or the like R6 represents a C1-C3 alkyl group which may have one or more halogen atoms, or the like R7 R8, and R9 each represent a hydrogen atom, a halogen atom, or the like R10 represents a C1-C3 alkyl group, or the like and R12 represents a phenyl group which may have one or more atoms or groups selected from group (P3), a phenoxy group which may have one or more atoms or groups selected from group (P3), or the like). The tetrazolinone compound has an excellent pest-control effect.
