To provide a sash-integrated window shutter simplifying the specified positioning work of a shading means such as a curtain or a blind.

This sash integrated window shutter 2 constituted by integrating a window shutter 10 with a double-sliding opening/closing type sash 9 is provided with a mounting part for the shading means 3 such as the curtain or blind on the indoor side of a shutter box 40.