Every dance exists in a complex network of relationship to other dances. The similarities could be found more or less if one look deeply into the origins and cultural backgrounds of different types of dance. This study will show the similar circular theory in Chinese Classical Dance and American Modern Dance. Through analyzing the origin and development of Chinese Classical Dance and American Modern Dance, the study will demonstrate how does the circular theory exist in these two types of dance. The huge visual differences between both types of dance will be further analyzed through the deep illustration of their training systems. How do they look different, and why?