达·芬奇虽无专门的美学论著，但他的画论中却包含着丰富的美学思想。他提出的“镜子说”涉及到了文艺与现实的关系问题，一方面，他认为文艺需师法自然，另一方面文艺必须超越自然。为了提高绘画的地位，达·芬奇把绘画与诗歌作了比较，显示了他对诗歌的独特认识，开西方美学史上艺术比较研究之先河。 Although Leonardo da Vinci does not have a special aesthetic treatise, his painting theory contains rich aesthetic thoughts. His “Mirror Theory” relates to the relationship between literature and art and the reality. On the one hand, he believes that literature and art need to be a teacher, and on the other hand, literature and art must transcend nature. In order to improve the status of painting, Leonardo da Vinci made a comparison between painting and poetry, showing his unique understanding of poetry and opening the way for the comparative study of art in the history of western aesthetics.