Virtual Book System (or Interactive Book Projection, Turning Pages in the Air, Interactive Flipping Book, Magic Book, Electronic Book) presents a virtual book, which is a projection image, in front of the visitor. Just standing in front of the table, the visitor could open the book or turn the pages by moving his hand in the air above the virtual book. In addition, more than one buttons are set on the pages, having the functions of turning pages and finding. It doesn' t need any wire, cable, or sensing system on the table or the ground, and the system is easy to be installed or maintained.