The invention discloses an auxiliary car lamp control method capable of pre-judging the steering intention of a driver. The method has the advantages that human eyeball actions are identified through a camera, and car speed information at the time is comprehensively considered; through the fuzzy algorithm, whether a car is to enter a curve or not is pre-judged, and a desired rotation angle of an auxiliary lamp is calculated; and the rotation of a stepping motor is controlled through a comparison with a current location of the auxiliary lamp, and active light compensation is carried out, so that a blind area of the curve is eliminated beforehand, and the possibility of car accidents at night is effectively reduced. The system overcomes the defect of passive response of the traditional auxiliary car lamp, and has the characteristics of high prediction accuracy, high responsiveness and the like.