A robot imaging device for monitoring the operation of a robot, by which the workload for organizing images may be reduced by imaging the operation of the robot without excess or deficiency, and whereby the total cost of the device may be reduced. The robot imaging device includes a camera for monitoring an operation of a robot, a camera positioning structure for movably supporting the camera, and a camera positioning structure control device for controlling the camera positioning structure. When a robot control device sends a command to the camera positioning structure control device, the camera positioning structure control device may control the camera positioning structure, based on the command, such that an imaging area of the camera is changed from one operation site to another operation site.