To provide an herbicidal composition capable of effectively controlling growth of undesirable plants that also is extremely safe for useful plants and achieves high effectiveness with a low quantity of chemical. An herbicidal composition characterized in containing as active ingredients: a component (A) selected from a group consisting of an oxoprazin derivative expressed by the formula (X) disclosed below, and a salt thereof； and a component (B) disclosed below. Component (A): (In the formula, R represents a lower alkyl group with a carbon number from 1 to 6, and X represents a halogen atom.) Component (B): At least one type of the compounds disclosed in the specification, such as 2,3,6-TBA (2,3,6-TBA), 2,4,5-T (2,4,5-T), 2,4-D(2,4-D), 2,4-DB (2,4-DB), and the like.
