A mobile printer having an electronic (e)--book function and a printing method thereof. The mobile printer includes a liquid crystal display (LCD) to display an electronic (e)--book, a printing part to print a text corresponding to a printing range selected of the electronic (e)--book displayed on the LCD, and a controlling part to control the printing part to display the electronic (e)--book on the LCD and to print the text corresponding to the selected printing range. Accordingly, it is possible to view and print the electronic (e)--book anywhere and anytime, so that a user's convenience increases.