The present invention provides a compound having an excellent efficacy for controlling pests. A tetrazolinone compound of a formula (1): [wherein, R1 represents an C6-C16 aryl group, an C1-C12 alkyl group, a C3-C12 cycloalkyl group or an adamantyl group, etc., which each optionally be substituted R2 represents a hydrogen atom, an C1-C12 alkyl group, or a halogen atom, etc. R4 and R5 represent independently of each other a hydrogen atom or an C1-C3 alkyl group, etc. R6, R7, R8 and R9 represent independently of each other a hydrogen atom, a halogen atom, an C1-C12 alkyl group, a C1-C12 haloalkyl group, an C2-C12 alkenyl group, a C3-C12 cycloalkyl group, an C1-C12 alkoxy group or a C1-C12 haloalkoxy group, etc. X and Y represent independently of each other a sulfur atom or an oxygen atom Q represents an oxygen atom or a sulfur atom and R10 represents an C1-C6 alkyl group, etc.] shows an excellent controlling efficacy on pests.
