The present invention relates to a type A crystal of nintedanib dietanesulfonate represented by the formula (II), a crystal composition containing the same, a pharmaceutical composition, and a production method and use thereof. The X-ray powder diffraction spectrum of the A-type crystal of nintedanib dietane sulfonate in the present invention is shown as 2θ values, which are about 14.64, 18.79, 19.31, 21.21, 20.20, 22.2. It has a diffraction peak at 45 and 26.71 °. The A-type crystal of nintedanib dietan sulfonate according to the present invention is stable in properties, hardly decomposes, is non-hygroscopic, and is particularly suitable for the production of pharmaceuticals. [Selection figure] None本発明は、式（ＩＩ）で表されるニンテダニブジエタンスルホン酸塩のＡ型結晶、それを含む結晶組成物、医薬組成物、並びにそれらの製造方法および使用に関する。本発明におけるニンテダニブジエタンスルホン酸塩のＡ型結晶のＸ線粉末回折スペクトルが２θ値で示されて約１４．６４、１８．７９、１９．３１、２０．１１、２１．２０、２２．４５、２６．７１°のところに回折ピークを有する。本発明に係るニンテダニブジエタンスルホン酸塩のＡ型結晶は、性質が安定で、分解しにくく、非吸湿性であり、特に医薬の製造に適する。【選択図】なし
