Using the verified CFD calculation method, this paper studies the control characteristics of the bendable wing tip in the flyingwing. The results show that the bendable wing tip can realize lateraldirectional control by the lateral force, and the influence on the lift, the resistance and the liftdrag ratio is very light when controlling the lateraldirection. There is a strong coupling among the yaw moment, the lateral force and the rolling moment when the bendable wing tip is unilateral actuation. The rolling moments counteract themselves when both wing tips are synchronously actuating on the opposite direction. Only the lateral force and the yaw moment have a strong coupling. The unilateral and synchronous actuations to the opposite direction on both sides of the bendable wing tip can form two different lateraldirectional control mechanisms.