This utility model relates to the field of building door and window technology, and in particular to an electrically operated lift window with a side-pressure sealing mechanism for the movable sash. It includes a movable sash, a fixed sash, and a frame. The frame is composed of an outer frame and an inner frame. The movable sash moves up and down within the frame, and its movement and sealing are achieved through a displacement side-pressure sealing component. This utility model resolves the contradiction between the movement and sealing of the movable sash in an electrically operated lift window, ensuring smooth movement of the sash and achieving side-pressure sealing through displacement of the displacement block when closed, thus improving the window's sealing performance.