A robot system includes a robot, a robot controller, a video acquisition device configured to acquire a real video of a work space, and a head-mounted type video display device provided with a visual line tracking section configured to acquire visual line information. A robot controller includes an information storage section configured to store information used for controlling the robot while associating the information with a type of an object, a gaze target identification section configured to identify, in the video, a gaze target viewed by a wearer based on the visual line information, and a display processing section configured to cause the video display device to display the information associated with the object corresponding to the identified gaze target, side by side with the gaze target in the form of one image through which the wearer can visually grasp, select, or set contents of the information.