Optical axis adjusting system for vehicle head lamp

There is provided an optical axis adjusting system for a vehicle head lamp (18), which detects (6,9,10,11) the inclination of the front part of a vehicle with respect to a road surface and controls an optical axis adjusting system (21) by an ECU (7) according to the detected inclination to adjust the optical axis of the head lamp (18). Therefore, the optical axis adjusting system is capable of finding the accurate inclination of the entire vehicle and properly adjusting the optical axis.