The embodiments of the present invention provide a card reader, electronic apparatus and protection method for memory card. The card reader comprises: a card slot having an accommodation space for accommodating a memory card, with parallel guiding slots being arranged on the left side and right side walls of the card slot; and a cover arranged on the card slot and being slidable on the card slot via the guiding slots. With the embodiments of the present invention, the delay time for stopping the read-write protection may be increased, the memory card may be protected in time, and the back repair rate of the memory card may be reduce.