Abstract: A method for adjusting a display appearance of a keyboard layout displayed on a touch display unit includes the steps of: (A) detecting a first touch press at a start datum point of the touch display unit; (B) detecting a second touch press at a first position different from the start datum point; (C) detecting a motion track on the touch display unit; (D) computing a key pitch and a key size parameter of the keyboard layout, based on a relative position relationship between the start datum point and the first position; (E) computing a curvature and a curving mode of the keyboard layout, based on a shifting direction and a shifting distance of the motion track; and (F) adjusting a display appearance of the keyboard layout, based on the key pitch, the key size parameter, the curvature, and the curving mode.