Abstract: To allow a worker to visually recognize information for assisting transportation of a transport object and the transport object at the same time. A guidance system includes a guidance device and a controller. The guidance device has a display portion. The controller stores information of a target position of a transport object. The controller calculates a detected position which is a current position of the transport object based on a detection result of a detection portion, and further calculates a position deviation which is a deviation of the detected position from a target position. The display portion displays information of the position deviation.