An in-car eye control method is provided to monitor a car driver's eyemovements,thereby allowing the driver to communicate with people outside the car orcontrol in-carequipment. The in-car eye control device essentially includes an imagecapturing unit forcapturing an image of the driver, an image processing unit for performingoperations onthe image taken, an eye determination unit for monitoring the driver's eyemovements andgenerating an eye control instruction, and a system operation unit forexecuting a systemprocess according to the eye control instruction. Thus, the in-car eye controlmethodprovides a diversity of communication or control solutions.