The utility model provides a can dismantle protection paper -cut for window decoration, it mainly comprises window frame, can dismantle protection paper -cut for window decoration, switch lock somewhat. During the dismantlement, opening switch (3) and making the baffle shrink, then paper -cut for window decoration frame and the increase of window frame clearance remove the paper -cut for window decoration slightly and just realize its dismantlement work, and the effect after the dismantlement is shown as in the figure. During the installation, then put into the window frame with the paper -cut for window decoration, block with the cushion one side, and the switch is closed to the opposite side makes the baffle stretch out, realizes that the installation of paper -cut for window decoration is fixed.