To provide a robotic device capable of precisely driving rotation by a command value while correcting external effects such as friction and sliding between a moving mechanism of the robotic device and a floor face.

This robotic device is movable on a floor 101 and is provided with a rotatable moving part 4 and a body 2 having a camera 13 rotatable to the moving part 4 in parallel to the floor. When receiving a request to turn by a certain angle at a site, this robotic device captures an image with the camera 13 and stores the captured content as a basic image. The moving part 4 and the body part start rotate in the required turning direction and inversely to the required direction respectively at a constant speed. When starting the rotation, this robotic device captures images by the camera 13, sequentially compares them with the stored basic image and confirms the deviation in the right/left. This robotic device applies the rotating speed to the moving part 4 or the body 2 in the direction of correcting the deviation to eliminate the deviation. When the rotating angle of the body 2 to the moving part 4 becomes the certain angle, the rotating operation is completed.