The binocular vision directly simulates the manner of human eyes observing one scene from different viewpoints to obtain the depth information of object. This system is for a particular application. The objects positioned by this system are markers which can reflect the light radiated by the light source, so they can be located by the passive reflection. The experiment platform is set up based on the principle of the binocular vision. The hardware components technology is analyzed. The system can find a good solution to the influence of complex background on recognition and localization of the markers. At last, experiments are conducted, which contain the distance and the angle measurements. The results demonstrate that the accuracy of the system is good.