A tetrazolinone compound represented by formula (1):wherein Q represents a 6-membered aromatic heterocyclic group optionally having one or more atoms or groups selected from Group P1, provided that a heteroatom constituting the heterocyclic group is a nitrogen atom, and the number of nitrogen atom is 1, 2, or 3 R1, R2, R3, and R11 each represents a C1-C6 alkyl group optionally having one or more atoms or groups selected from Group P2 R9 and R5 each represents a hydrogen atom, etc. R6 represents a C1-C6 alkyl group optionally having one or more halogen atoms, etc. R7, R8, and R9 each represents a hydrogen atom, etc. and X represents an oxygen atom or a sulfur atom, has excellent control activity against pests.
