Abstract: Shadow play is studied with our professional dynamics in order to find out a new method for simulating the real shadow play motion. The content of this work is as follows. First, found a dynamics model of several rigid, which respect to the geometric of shadow. Second, found dynamics equation for generating motion of every part of a shadow and make value with numerical value method. Third, generate shadow play animations by FLASH action-scrip. In a short, action-scrip could generate the real shadow play animations.