Abstract. Since the 16th century, philosophy, as one of the important enlightening factors in the creation of French literature, has been running through the history of French literature. Therefore, in the teaching of the history of French literature, we should appropriately make a clear explanation of relative philosophical knowledge, and particularly sort out the relationship between literary genres and philosophical concepts. Clear comprehension of relative philosophical knowledge will help students to thoroughly understand the ideological roots of the genre of literary writing, and further, on the whole, grasp the history of French literature. This thesis takes "modernity" and "Decadent movement" as examples to discuss how to infiltrate philosophical knowledge into the teaching of the history of French literature.