Portable terminal and method for displaying touch keypad thereof

A portable terminal having a touch screen and a touch key pad display method are provided to select each key from a touch key pad due to dividing and displaying a left hand keypad and a right hand key pad of the touch key pad in a lengthwise mode of the portable terminal. When a text preparation is requested, the portable terminal is the lengthwise mode, it is determined(213). If the mode of the portable terminal is the lengthwise mode, it divides the left hand keypad and right hand keypad of the touch key pad into top and bottom(215). When the inversion of the touch key pad is requested, the portable terminal inverts the left hand keypad and right hand keypad to top and bottom(219,221).