A visualized method of animated simulation for missile flight attitude research was proposed. Take roll missile as example, through calculating missile trajectory equation, building 3D model of the roll missile and the tank target based on the ACIS platform, roll missile exterior trajectory flight simulation system was established, the process of missile flight and hitting the tanks was simulated, finally the ballistic missile flight data was obtained. The results show that method which using computer simulation technology to assist modern research of exterior trajectory is feasible.