Abstract: A folio shielding mechanism suitable for protecting an operation surface of a host is provided. The folio shielding mechanism includes a first shell, a second shell, and a transmission module. The transmission module is disposed on a first supporting surface of the host adjacent to the operation surface, and is connected to the first shell and the second shell. When the first shell is moving towards a first direction, the second shell is driven by the first shell through the transmission module and moving towards a second direction opposite to the first direction, so that the first shell and the second shell would be either joined together above the operation surface for covering the operation surface or apart from each other for exposing the operation surface.