PROBLEM TO BE SOLVED: To provide a herbicidal composition that has an excellent weed control effect.SOLUTION: Provided is a herbicidal composition containing a pyrazolyl pyrazole derivative represented by the following formula (I), and at least one compound selected from herbicidally active compounds, in particular any of ALS inhibitor, germination and growth inhibitor, photosynthesis inhibitor, PPO inhibitor, whitening agent, VLCFAs inhibitor, hormone action inhibitor-disruptor, ACCase inhibitor, and non-selective herbicide. [R1 represents a halogen atom； R2 is cyano, etc.； R3 is H, trifluoroacetyl or the like； R4 to R9 are H, halogen atom, alkyl, phenyl or the like； a is 3 to 5； b is 0 to 2.].SELECTED DRAWING: None【課題】優れた雑草防除効果を有する除草用組成物の提供。【解決手段】次式（Ｉ）で示されるピラゾリルピラゾール誘導体と、除草活性化合物から選ばれる少なくとも１種の化合物、特にＡＬＳ阻害剤、発芽・伸長抑制剤、光合成阻害剤、ＰＰＯ阻害剤、白化剤、ＶＬＣＦＡｓ阻害剤、ホルモン作用阻害・撹乱剤、ＡＣＣａｓｅ阻害剤、非選択除草剤のいずれかを含有する除草用組成物。〔Ｒ1はハロゲン原子；Ｒ2はシアノ等；Ｒ3はＨ、トリフルオロアセチル等；Ｒ4～Ｒ9はＨ、ハロゲン原子、アルキル、フェニル等；ａは３～５；ｂは０～２〕【選択図】なし
