We could understand the significance of classical interpretation from three aspects. First， the classical texts have different interpretations in different periods and it have the identity of continuity. As a circulating material， the classical texts have vivid characteristics， which usually take a long time to accumulate. Second， the classical texts are extensible， which means that it has new space to interpret. Third， classical interpretation is characterized by constancy and times. Constancy means it has a general principle. The characteristics of the times means to interpret new meanings when we read classical texts. There is a new understanding in different times.