A method for controlling appearing and disappearing of screen keyboard tables includes at least the following steps: (1) triggering: present the keyboard tables on a screen when a touch panel is touched by a user's finger; (2) depressing the touch panel: user's finger depresses each character segment on the touch panel and a corresponding character is input; and (3) entering an ending character: enter an ending character, and the keyboard tables disappear from the screen. Thus the convenience of data entry for users is enhanced and the keyboard tables are concealed as desired to facilitate user review.