As the first stage of comparative literature,the French school has made great contributions. But for a long time,the academic mostly focused on the influencing study and the empirical method. In fact,in the theoretical system of the French school,in addition to the empirical research,non-empirical research also has been discussed. And since the middle of the twentieth century,the theory of American school shows more non-empirical characteristics. After entering the new century,although both influence research and empirical research often be questioned,it is no doubt that empirical research is not out of date. And the correct direction for the development of comparative literature is the combination of empirical study and non-empirical study.