There are important significations in the industrial production and academy research to manage the intelligent robot walks along the scheduled track. This paper combines the development of the contest robot, and discusses the reliable method to realize this function. By the discussion on the chosen of the key sensors, sensing principle, realization of resisting the interference from surrounding light and self-adaptation adjustment algorithm, the authors analyz the linetracking technology on contest robots precisely. Practice indicates that the method of the hardware and software stated is concise and reliable, and there are some reference significations in the application research of the intelligent robot.