The shadow theatre has significant theatrical characteristics and a unique artistic form and style,independent of several classical dramas.It uses the shadow screen as a"medium",not only separating the front and back stages to form a way of watching the performance through the separated screen,but also connecting the front and back stages,forming a Spectator-performance relationship that is different from puppet shows,Xiqu,ritual dramas,Nuoxi and other performances.The particularity of the shadow theatre art determines its limitations and expressive possibilities,which are different from other theatrical arts.The limitations and expressive possibilities of the art of shadow theatre,as well as the dialectical relationship between them,are worthy of attention.