The present invention discloses a crystalline form of an androgen receptor antagonist (ODM-201 represented by formula (I)), a method for producing the same, and use thereof. ODM-201 crystal form B or crystal form C according to the present invention has low hygroscopicity, good stability, high solubility, excellent fluidity, suitable particle size and uniform distribution, It provides new options for the manufacture of pharmaceuticals, including, and has significant value from the perspective of drug development.本発明は、アンドロゲン受容体拮抗薬（式（Ｉ）で表されるＯＤＭ－２０１）の結晶形及びその製造方法並びに用途を開示する。本発明によるＯＤＭ－２０１の結晶形Ｂ又は結晶形Ｃは、低い吸湿性、良好な安定性、高い溶解性、優れる流動性、適切な粒径寸法及び均一な分布を有し、ＯＤＭ－２０１を含む医薬品の製造に新たな選択肢を提供し、医薬開発の観点から重要な価値を有する。
