Abstract: In order to ensure the driving safety and enhance the discrimination accuracy, a car-s night-vision system was put forward based on active near infrared detection technique. The system included the infrared emitting unit, infrared imaging unit, and image display unit. The loss rate of the system in field test was 1.3%. The experimental results imply that most infrared components in traditional automotive light are useless for night illumination, and the visible light energy efficiency is lower. The car-s night-vision system based on infrared detection technique can ensure effectively driving security.