A vehicle display device according to an embodiment of the disclosure includes a display that displays, as an image, functions for various pieces of vehicle operation information, a knob that is electrically interlocked with the display and selectively operates a corresponding function of the display according to left-right movement thereof, a guide rail that provides a movement path of the knob and divides a plurality of functional areas interlocked with the functions displayed on the display, and a guide part in which magnets having different polarities are alternately arranged in a lengthwise direction of the guide rail to automatically guide a location of the knob.