A method and apparatus of providing a mouse function in a touch device includes displaying a mouse interface which is divided into a panning area and a pointer move area. An input of a mouse gesture is received through the mouse interface, processing a panning operation of a contents screen which is displayed in a display device when the mouse gesture is inputted in the panning area, and processing a move operation of a mouse pointer which is displayed in the display device when the mouse gesture is inputted in the pointer move area. The touch device at the time of execution of the mouse mode, and generates a control event for panning the contents screen and moving the mouse pointer according to a mouse gesture which is inputted from the panning area and the pointer move area may provide a mouse function for a display device.