Abstract: Technology for simulating guided movement of crowds is applied to demonstrate the transforming process of group calisthenics’formation and patterns. The prototype system consists of two parts：design system of formation（and patterns）,and virtual rehearsal system of group calisthenics.Architecture and functions of the system are outlined.Several key techniques,including path planning collision avoidance and rea-l time rendering are illustrated.Experimental results show that the system can help to improve the design quality and efficiency of planning team transform and pattern.