A tetrazolinone compound represented by formula (1): wherein R 1 and R 2 each independently represents a hydrogen atom, a C1-C4 alkyl group optionally having one or more halogen atoms, etc.； R 3 represents a hydrogen atom, a C1-C4 alkyl group optionally having one or more halogen atoms, etc.； R 4 represents a halogen atom, a C1-C4 alkyl group optionally having one or more halogen atoms, etc.； h represents any one of integers of 0 to 4； X represents a nitrogen atom or CR 5 ； and R 5 represents a hydrogen atom, a halogen atom, etc. ； has excellent control activity against pests.
