The present invention provides a compound having an excellent efficacy for controlling pests. A tetrazolinone compound of a formula (1) [wherein Q represents a group selected from the following group: Q1, Q2, Q3 or Q4: R1, R2, R3 and R11 represent independently of each other a halogen atom, an CI-C6 alkyl group, etc.; R 4 and R 5 represent independnetly of each other a hydrogen atom, a halogen atom or an C1-C3 alkyl group, etc.; R 6 represents a halogen atom, an C1-C4 alkyl group, etc.; R 7 , R 8 and R 9 represent independnetly of each other a hydrogen atom, a halogen atom, etc.; and R 10 represents an C1-C3 alkyl group, etc.] shows an excellent controlling efficacy on pests.