Display system and method of performance-based navigation parameters

The present invention relates to a display system and a display method for displaying performance-based navigation (PBN) parameters. The display system comprises an interaction system, a flight management system, an automatic flight system and a display device. The flight management system can calculate the deviation between the actual flight parameter and the selected flight parameter, and outputs a calculation result; the automatic flight system is in communication connection with the interaction system and is configured to calculate a current flight mode based on the flight parameters. According to the invention, parameters such as the current position, the navigation channel, the navigation channel deviation, RNP and ANP of an aircraft can be dynamically indicated through a deviation band and a symbolic mode, and the operation of modifying the flight path to the corresponding side, which should be adopted by a pilot for the current navigation channel deviation can be dynamically indicated. The display sys