The pre-Qin period is a period when the of loyalty was integrated and created by Confucians,among which Confucius,Mencius and Xunzi are the principal representatives.Their theoretical contribution lies in three aspects: First,from a perspective,the pre-Qin Confucians think that the loyalty of means just,all virtue and it is the basis of all other virtues.Second,from point of view of political morality,the pre-Qin Confucians think that the loyalty of requires equality and reciprocity.Lastly,from the perspective of practice,the pre-Qin Confucians think the of loyalty is layered.