With the development of information technology in aviation industry,air traffic control system is facing the threat of various network attacks.ADS-B has the security problem of being attacked by the network because of its data transmission mode of plaintext broadcast.According to the whole flight operation process of Waiting for landing-Landing-Parking-Queuing for takeoff-Departure (WLPQD),a WLPQD dynamic discrete queuing model is established.The model introduces such parameters as system redundancy and processing speed to simulate the attack scenario.The impact of airport flight delay propagation is studied through the indicators such as the number of affected aircrafts and delayed time.The model shows the delay propagation caused by ADS-B deception attack on landing and take-off flights,and two attack mitigation strategies are proposed.The results show that:1) The stronger the attacking intensity,the severer the delayed flight;2) Both the processing speed improvements on the “ghost aircrafts” and the legal aircrafts are helpful for enhancing the invulnerability of airport system,and the former is more efficient.The research provides a new method for airport system to resist network attacks and enhance invulnerability.