To provide a product and a method for treating Crohn's disease.SOLUTION: A method for treating Crohn's disease in a subject who needs treatment of Crohn's disease includes administering an anti-IL-23 antibody to a subject at an amount and an interval of: a. 15 to 54 mg by every 0.5 to 1.5 months; b. 55 to 149 mg by every 1.5 to 4.5 months; c. 150 to 299 mg by every 4 to 8 months; or d. 300 to 1100 mg by every 4 to 12 months.SELECTED DRAWING: None【課題】クローン病を治療するための生成物及び方法の提供。【解決手段】a.0.5~1.5ヶ月毎に15~54mg、b.1.5~4.5ヶ月毎に55~149mg、c.4~8ヶ月毎に150~299mg、またはd.4~12ヶ月毎に300~1100mgの量及び間隔で、対象に抗IL-23抗体を投与することを含む、クローン病の治療を必要とする前記対象におけるクローン病の治療方法。【選択図】なし