Wing torsion and classic aileron trailing edge deflection are both possible intelligent wing roll control methods in the future. The comparison between torsional wing and classical aileron wing was carried out by Fluent simulation. The differences and characteristics of the two wings in lift-drag performance, roll moment coefficient and pressure distribution were analyzed, and the roll control equivalent effect and aerodynamic advantage of the torsional wing compared with the aileron were obtained. The results show that, due to the continuity of wing deformation and the small torsion angle required by the torsional wing roll control, it is easy to keep the flow field attached and stable under the wing defined in the paper, so the same roll moment coefficient is achieved. The required torsion angle of the torsional wing is about 30% -50% of the aileron deflection angle, and the lift-drag ratio of the torsional wing is significantly better than that of the aileron wing. With the increase of the control angle, the advantage becomes more obvious, and the lift-drag ratio of the torsional wing is about twice that of the aileron wing when the control angle is large.