Recently, studies on skiing turns are researched from various viewpoints and the mechanism of the skiing turn using the skiing robot is clarified. However, those mechanical models derived by using the approximate expressions don't match to an alpine skiing turn and results are not concretely reflected. Therefore, to facilitate theoretical consideration, the passive type skiing robot was developed. The influence on the skiing turn such as the position of center of gravity and the shape of skiing are examined by using this robot. In this paper, we examined the dynamics of ski turning to help skiers improve their abilities as athletes.