The present invention herein provides an imidafenacin-containing orally rapidly disintegrating tablet which is excellent in the photostability.The present invention comprises the steps of: (A) granulating imidafenacin together with starch to thus give a granulated product having an imidafenacin concentration ranging from 0.001 to 3% by mass and a starch concentration ranging from 40 to 99.999% by mass； (B) covering the granulated product prepared in the step (A) with a non-cellulosic coating agent； and (C) blending the granulated product obtained in the preceding step (B) with an excipient and a disintegrating agent and then forming the resulting mixture into a tablet according to the compression molding technique.
