Nowadays, a large item small volume production method comes to be important. However such production method has some problems; the high cost of education to human workers, the difficulty of improving efficiency of production and so on. In this study, we took up the work of inserting electronic parts on printed circuit boards as such production, and to solve such problems of that work we developed a supporting system for human workers by a video camera, a TV monitor, and a laser beam. In this paper, we explain the detail of the system and report about the investigation of the performance and usability of this system.