This paper will provide a critique of Badiou’s ideas about art and artistic truth. We diagnose an incompatibility in this area of his philosophy. We can  obviously recognize this if we compare Badiou’s general views about truth and artistic truth in one hand and his encounters with special works of art in other hand. A precise investigation on the nature of these encounters will expose a deep incompatibility between two different meanings of artistic truth, simultaneously at work in Badiou’s philosophy. Recognizing this, we can account for some inconsistencies and discordances that occur in his different texts.