Research on side maneuverability was a very important reference to tracking and prediction of hypersonic vehicle .Based on calculating minimum turning radius and yawing distance, the influence of velocity and height to the side maneuverability of hypersonic vehicle was researched. First, mathematic model of vehicle was established under certain assumption. Second, the turning radius model, displacement model and acceleration model of hypersonic vehicle under variable-rate turn maneuver was established. After calculating minimum turning radius of two turning mode and yawing distance of constant turning mode, it was concluded that velocity and height would bring different influence to the maneuverability of hypersonic vehicle.