This study is for not only producing kinematic determinant and understanding the principles and phenomenon of the motion by using 3 dimensional image analysis of circle movement on a side horse on 5 excellent players, but also providing scientific materials and performing better. It turned out a more stable swing that they make the time longer to keep the circle speed control and the center of gravity in P1 and P4 section where you are grabbing with your both hands, and the time shorter by moving the center of gravity fast with a big swing in P3 section, and that they push their left and right hand hard and help their upper body movement and lift themselves up vertically when they jump the pommel by positioning their right and left movement according to the movement and the center of gravity back. Also about the speed of the center of gravity, increasing left and right speed using spin of the body at the moment of one hand falling down from the pommel, and controlling the left and right and up and down speed at the moment of grabbing with the both hands, makes the movement smooth. About change of angle, while the shoulder joints decrease the angles drawing the body with their arms, coxae expand the angles and centripetal force of the circle. And it lifts up the hight of the center of body through enough supporting and winding and expending on the axis of the arms.