With the long-term use of the Global Navigation Satellite System(GNSS)Ground Based Augmentation System (GBAS) at the airport, it is necessary to be able to track historical data, simulate satellite system failures, verify and analyze GBAS operational performance and locate problems.How to use the historical data recorded by the GBAS system is a prerequisite for achieving the above functions.A set of data playback system for GBAS original data is implemented, which is convenient for the historical scene recurrence, problem location and performance verification and analysis of GBAS system in the later period.