Fighter attack track following is the key of realizing fighter auto attack. This paper firstly analyzes the process of the fighter attack track following, taking the fighter sight error into attack track following algorithm, and proposes a method of fighter attack track following based on sight error. By dividing the sight error into two faces for analysis, the model of track following is built up. And by using Simulink toolbox and FlightGear, the process of track following is simulated comprehensively. The result shows that sight error will be reduced continuously to realize accurate flight following the tracks of attack .