According to the characteristic of the visual simulation system in flight simulator, building the vision sensor simulation model of the visual simulation system in flight simulator by building the sensor footprint, and emphatically introduce the floor place of the sensor footprint and ensure confirm the capability index of sensor, and survey some variable in footprint which are relational to the vision sensor simulation. As a result, the model is propitious to the track of the flight simulator and provides reference to the simulative track design.