Abstract：The relationship between history and metaphysics is a very subtle issue in all Fichte's doctrines. On the one hand, Fichte wants to ensure the rationality of the existence of specific history; on the other hand, he is not willing to let himself fall into it. From the perspective of human reason and the whole history, Fichte has embodied specific history in all possible a priori reunifications. In order to achieve this unity, Fichte has harmonized both philosophical reason and godliness in history and metaphysics. But by re-examining the results of Fichte's reconciliation, we will find that there is always a certain gap between reason and morality. This is a challenge that Fichte must face in dealing with historical and metaphysical relations, also a philosophical dilemma for all his doctrines.

Keyword：history;metaphysics;Fichte's thought;reason;