Abstract: Morality is important idea in ancient China.The history of Chinese traditional culture,in fact,is a history of morality.And as its representative thoughts,Confucianism,Taoism and Mohism had studied morality from beginning to end.This paper focuses upon the differences of the three philosophical thoughts from the perspectives of their standpoints,the relation of self and collective and the ultimate aim.Our purpose of studying the theory is to direct reality because the excellent traditional culture can do its contribution to the building of the harmonious society.