The invention discloses a device and a method for assisting in the visual circling approach. To complete a visual circling approach task, the device calculates a protection region of the visual circling approach after determining a landing airport; a pilot can select to automatically or manually participate in generating a visual circling approach path. After the pilot confirms, guide information of the visual circling approach is calculated according to the path to assist in visual circling; in the subsequent approaching process, the device continuously monitors a flight state and, the device reminds the pilot to take necessary measures to avoid the danger once detecting the potential danger. The device and the method can effectively improve the automation level in the visual circling approaching process, reduce the load of the flight crew and improve flight safety.