The positioning technology in life is mainly based on the global positioning system (GPS) outdoor positioning technology,if the indoor GPS error will be quite large.The traditional way uses the camera to collect images and the algorithm to locate,but its cost is high,the application is more complex,can not be widely used.In this paper,a positioning robot based on visible light communication is designed.The ROS system is used for development.The position is obtained through visible light communication,and the position near or far from the target is obtained through light sensor.Finally,it can be positioned indoors.