The utility model belongs to the technical field of windows, and particularly relates to a frame sash structure of an inward side-hung door and window, which comprises a window frame, a placing groove is arranged inside one side of the bottom end of the window frame, a sliding groove is arranged inside the edge of one side of the window frame, a
transverse groove is arranged inside the window frame and vertically penetrates through the sliding groove, and a connecting rod is arranged inside the
transverse groove in a sliding and penetrating mode. A rolling ball is arranged in the middle of the connecting rod, a supporting rod is installed on the bottom side of the rolling ball, and a cleaning
brush is installed at the bottom end of the supporting rod. The
handle drives the connecting rod and the rolling ball to rotate in the
transverse groove and the sliding grooves correspondingly, then the supporting rod is driven to rotate, then the
handle is pushed to move up and down, the connecting rod slides in the transverse groove, the rolling ball moves in the sliding grooves, and the connecting rod drives the cleaning
brush to move up and down on one side of the window along the sliding grooves. And after cleaning is completed, the cleaning
brush is moved to the bottom end of the window frame, the
handle is rotated reversely, the supporting rod is made to return to the state parallel to the window frame, and the cleaning brush is placed back into the containing groove.