A multi-display apparatus includes a first body mounted with a first display, a second body mounted with a second display, a hinge connecting the first body and the second body, a first frame buffer corresponding to a first display, a second frame buffer corresponding to a second display, and a controller which manages the first and second frame buffers with a separate storing method which separately manages the first and second frame buffers and stores data or a united storing method which manages the first and second frame buffers as one virtual united frame buffer and stores data. The controller stores data on the first and second frame buffers by converting the managing method according to data features displayed on the first and second displays, and the first and second displays display the data stored in the first and second frame buffers respectively.