1123112456789A tetrazolinone compound represented by formula (1) has ex cellent control efficacy on pests. (1) [In the formula : Q is a 6 membered aromatic heterocyclic group which may have one or more atoms or groups selected from group P (provided that a hetero atom that composes the heterocyclic group is a nitrogen atom and the number of the nitrogen atom is 1 2 or 3) R R R and R are each a C1 C6 alkyl group etc. which may have one or more atoms or groups selected from group P R and R are each a hydro gen atom etc. R is a C1 C6 alkyl group etc. which may have one or more halogen atoms R R and R are each a hydrogen atom etc. and X is an oxygen atom or sulfur atom.]
